Embodiment
Below in conjunction with embodiment the present invention is further detailed
Embodiment 1:
(1), amino acid protection
A, with 13.1 the gram Methionins, 13.9 the gram Histidines be dissolved in 50 milliliters of 2mol1
-1Among the NaOH, cryosel is bathed, and is added dropwise in advance under stirring and restrains Z-Cl with THF dissolved 34.1, is added dropwise to 2mol1 simultaneously
-1NaOH makes solution keep pH=9, finishes, and is warming up to room temperature naturally, continues to stir 1 hour, washes twice with 50 milliliters of ether, divides and removes the ether layer, and water under agitation is added dropwise to 6mol1
-1Hydrochloric acid adds 75 milliliters of ethyl acetate to pH=1, continues to stir 5 minutes, and separatory, ethyl acetate layer is washed till neutrality with 5%NaCl, anhydrous Na
2SO
4Drying, underpressure distillation removes and desolvates, and obtains Z
2-Lys and Z
2-His;
B, 5.9 gram glycine are dissolved in 50 ml methanol, put cryosel and be cooled to-10 ℃ in bathing, slowly dripping thionyl chloride is 20 milliliters, add 10 milliliters of 98% vitriol oils again, placed 2 hours under 20 ℃ of temperature, water-bath refluxed 30 minutes under 70 ℃ of temperature, glycine is all dissolved, underpressure distillation adds 50 milliliters of ether after removing methyl alcohol, has mass crystallization to separate out, and places 1.5 hours under 2 ℃ of temperature, to be crystallized fully after, filter, use 25 milliliters of absolute ethanol washing crystallizations again, obtain GlyOCH
3
(2), protection HIS-GLY dipeptides is synthetic
Take by weighing 11.73 gram Z
2-His is dissolved among 50 milliliters of anhydrous THF, be chilled to 0 ℃ with the cryosel bath, in stirring down, add respectively in advance with tetrahydrofuran (THF) dissolved 0.87 gram HOSu and 6.16 gram DCC, add with dropping funnel, drip and finish, reaction is 30 minutes under 0 ℃ of temperature, adds under 0 ℃ of temperature then in advance with DMF dissolved 3.54 gram GlyOCH
3Reach 1.2 gram NMM, reacted 30 minutes down at 0 ℃ again, room temperature reaction is 4 hours then, (thin layer plate is commercially available silica gel G plate with TLC monitoring reaction process, developping agent is a sherwood oil: acetone=4: 1, the colour developing of 2% ethanol solution of ninhydrin), after reaction finishes, filter, the filtrate rotary evaporation to doing, is added 30 milliliters of entry, 50 milliliters of ethyl acetate, be transferred to the separating funnel separatory, water merges organic layer with an amount of ethyl acetate extraction (2 * 40 milliliters), uses distilled water respectively, saturated citric acid, saturated NaHCO
3Liquid and saturated NaCl liquid washing (2 * 30 milliliters), and use anhydrous Na
2SO
4Drying 12 hours is filtered, and revolves to steam ethyl acetate, gets light yellow viscous liquid Z
2-His-Gly OCH
3HCl;
(3), the HIS-GLY dipeptides of deaminizating protection is synthetic
With above-mentioned light yellow viscous liquid Z
2-His-Gly OCH
3HCl adds saturated anhydrous HCl-ethyl acetate solution, stirring at room, and till no longer separating out a large amount of white precipitates, after reaction finished, solvent evaporated on Rotary Evaporators obtained His-Gly OCH
3HCl;
(4), protection Methionin-HIS-GLY is synthetic
With 14.4g His-Gly OCH
3HCl is dissolved in an amount of DMF, and (in 10~15ml), and add 5.7 gram N-methylmorpholines (NMM), 0 ℃ was stirred 30 minutes down then, obtained stand-by compound;
In 250 milliliters of round-bottomed flasks, add 21.91 gram Z
2-Lys, with an amount of THF dissolving (about 50 milliliters), cryosel is bathed and is cooled to 2 ℃, drips under this temperature with THF dissolved 11.81 gram DCC, 1.27 gram HOSu, after drip finishing, under this temperature, continued stirring reaction 3 hours, under 3 ℃ of temperature, drip stand-by compound and N-methylmorpholine DMF solution then with dropping funnel, drip and finish, continue stirring reaction 30 minutes at 5 ℃, be warming up to room temperature then, continued stirring reaction 36 hours.With TLC monitoring reaction process (thin layer plate is commercially available silica gel G plate, and developping agent is a sherwood oil: acetone=4: 1, the colour developing of 2% ethanol solution of ninhydrin), reaction is finished, and with reacting liquid filtering, filtrate is revolved and steamed to doing, add the 60ml ethyl acetate, be transferred to separating funnel, add distilled water, separatory, water layer is used ethyl acetate extraction 2 times (2 * 60 milliliters) again, merge organic layer, use saturated citric acid respectively, saturated NaHCO
3Liquid and saturated NaCl liquid washing (3 * 30 milliliters) are washed till pH=6, the organic layer anhydrous Na
2SO
4Dry 12 hours, filter, vacuum rotary steam goes out solvent, obtains Z
2-Lys-His-GlyOCH
3HCl;
(5), the Methionin-HIS-GLY tripeptides of deaminizating protection is synthetic
With above-mentioned Z
2-Lys-His-GlyOCH
3HCl adds the saturated anhydrous HCl-ethyl acetate solution of about 150ml, about 3 hours of stirring at room, and after reaction finished, solvent evaporated on Rotary Evaporators obtained Lys-His-Gly OCH
3HCl;
(6), the bursa of Fabricius bursin crude product is synthetic
With Lys-His-Gly OCH
3The HCl anhydrous alcohol solution is cooled to 0~5 ℃ with the cryosel bath, feeds exsiccant NH
3To solution saturated (about 4~6 hours), room temperature was placed 3 days, and solution solvent evaporated on Rotary Evaporators is obtained crude product;
(7), purifying
With the crude product anhydrous alcohol solution, filter, with filtrate solvent evaporated on Rotary Evaporators, get the pure product Lys-His-Gly-NH of bursa of Fabricius bursin
2HCl, purity reaches more than 95%.
Embodiment 2:
(1), amino acid protection
A, with 13.1 the gram Methionins, 13.9 the gram Histidines be dissolved in 50 milliliters of 2moll
-1Among the NaOH, cryosel is bathed, and is added dropwise under stirring in advance with THF dissolved 22 grams (Boc)
2O is added dropwise to 2moll simultaneously
-1NaOH makes solution keep pH=9.Finish, rise to room temperature naturally, continue to stir 1 hour, wash twice with 50 milliliters of ether, divide and remove the ether layer, water under agitation is added dropwise to 6moll
-1Hydrochloric acid adds 75 milliliters of ethyl acetate to pH=1, continues to stir 8 minutes, and separatory, ethyl acetate layer is washed till neutrality with 5%NaCl, anhydrous Na
2SO
4Drying, underpressure distillation removes and desolvates, and obtains Z
2-Lys and Z
2-His;
B, 5.9 gram glycine are dissolved in 50 ml methanol, put cryosel and be cooled to-10 ℃ in bathing, slowly dripping thionyl chloride is 20 milliliters, adds 10 milliliters of 98% vitriol oils again, places 2 hours for 20 ℃, and 80 ℃ of water-baths refluxed 30 minutes, and glycine is all dissolved.Underpressure distillation is removed and is added 50 milliliters of ether behind the methyl alcohol. have mass crystallization to separate out, placed 1 hour for 4 ℃, to be crystallized fully after, filter, use 25 milliliters of absolute ethanol washing crystallizations again.Obtain GlyOCH
3
(2), protection HIS-GLY dipeptides is synthetic
Take by weighing 11.73 gram Z
2-His is dissolved among 50 milliliters of anhydrous THF, be chilled to 0 ℃ with the cryosel bath, in stirring down, add respectively in advance with tetrahydrofuran (THF) dissolved 1.03 gram HOBt and 6.16 gram DCC (adding) with dropping funnel, drip and finish, reacted 30 minutes down in 0 ℃, add down in advance with DMF dissolved 3.54 gram GlyOCH at 0 ℃ then
3Reach 1.2 gram NMM, reacted 30 minutes down at 0 ℃ again, room temperature reaction is 4 hours then, (thin layer plate is commercially available silica gel G plate with TLC monitoring reaction process, developping agent is a sherwood oil: acetone=4: 1, the colour developing of 2% ethanol solution of ninhydrin), after reaction finishes, filter, the filtrate rotary evaporation to doing, is added 30 milliliters of entry, 50 milliliters of ethyl acetate, be transferred to the separating funnel separatory, water merges organic layer with an amount of ethyl acetate extraction (2 * 40 milliliters), uses distilled water respectively, saturated citric acid, saturated NaHCO
3Liquid and saturated NaCl liquid washing (2 * 30 milliliters) merge organic layer, and use anhydrous Na
2SO
4Drying 14 hours is filtered, and revolves to steam ethyl acetate, gets light yellow viscous liquid Z
2-His-Gly OCH
3HCl;
(3), the HIS-GLY dipeptides of deaminizating protection is synthetic
With above-mentioned light yellow viscous liquid Z
2-His-Gly OCH
3HCl adds saturated anhydrous HCl-ethyl acetate solution, stirring at room, and till no longer separating out a large amount of white precipitates (about 2~4 hours), after reaction finished, solvent evaporated on Rotary Evaporators obtained His-Gly OCH
3HCl;
(4), protection Methionin-HIS-GLY is synthetic
With 14.4g His-Gly OCH
3HCl is dissolved in an amount of DMF, and (in 10~15ml), and add 5.7 gram N-methylmorpholines (NMM), 0 ℃ was stirred 30 minutes down then, obtained stand-by compound;
In 250 milliliters of round-bottomed flasks, add 21.91 gram Z
2-Lys, with an amount of THF dissolving (about 50 milliliters), cryosel is bathed and is cooled to 0 ℃, drips under this temperature with THF dissolved 11.81 gram DCC, 1.51 gram HOBt.After drip finishing, under this temperature, continued stirring reaction 4 hours.Drip stand-by compound and N-methylmorpholine DMF solution at 0 ℃ with dropping funnel then, drip and finish, continue stirring reaction 30 minutes at 0 ℃, be warming up to room temperature then, continued stirring reaction 36 hours, (thin layer plate is commercially available silica gel G plate with TLC monitoring reaction process, developping agent is a sherwood oil: acetone=4: 1, the colour developing of 2% ethanol solution of ninhydrin), reaction is finished, with reacting liquid filtering, filtrate is revolved and is steamed to doing, and adds the 60ml ethyl acetate, is transferred to separating funnel, add distilled water, separatory, water layer are used ethyl acetate extraction 2 times (2 * 60 milliliters) again, merge organic layer, use saturated citric acid respectively, saturated NaHCO
3Liquid and saturated NaCl liquid washing (3 * 30 milliliters) are washed till pH=6, the organic layer anhydrous Na
2SO
4Dry 12 hours, filter, vacuum rotary steam goes out solvent, obtains Z
2-Lys-His-GlyOCH
3HCl;
(5), the Methionin-HIS-GLY tripeptides of deaminizating protection is synthetic
With Z
2-Lys-His-GlyOCH
3HCl adds the saturated anhydrous HCl-ethyl acetate solution of about 150ml, about 3 hours of stirring at room, and after reaction finished, solvent evaporated on Rotary Evaporators obtained Lys-His-GlyOCH
3HCl;
(6), the bursa of Fabricius bursin crude product is synthetic
With Lys-His-Gly OCH
3The HCl anhydrous alcohol solution is cooled to 0~5 ℃ with the cryosel bath, feeds exsiccant NH
3To solution saturated (about 4~6 hours), room temperature was placed 3 days, and solution solvent evaporated on Rotary Evaporators is obtained crude product;
(7), purifying
With the crude product anhydrous alcohol solution, filter, with filtrate solvent evaporated on Rotary Evaporators, get the pure product Lys-His-Gly-NH of bursa of Fabricius bursin
2HCl, purity reaches more than 95%.
Embodiment 3:
(1), amino acid protection
A, with 13.1 the gram Methionins, 13.9 the gram Histidines be dissolved in 50 milliliters of 2moll
-1Among the NaOH, cryosel is bathed, and is added dropwise under stirring in advance with THF dissolved 22 grams (Boc)
2O is added dropwise to 2moll simultaneously
-1NaOH makes solution keep pH=9, finishes, and rises to room temperature naturally, continues to stir 1 hour, washes twice with 50 milliliters of ether, divides and removes the ether layer, and water under agitation is added dropwise to 6moll
-1Hydrochloric acid adds 75 milliliters of ethyl acetate to pH=1, continues to stir 6 minutes, and separatory, ethyl acetate layer is washed till neutrality with 5%NaCl, anhydrous Na
2SO
4Drying, underpressure distillation removes and desolvates, and obtains Boc
2-Lys and Boc
2-His;
B, 5.9 gram glycine are dissolved in 50 ml methanol, put cryosel and be cooled to-10 ℃ in bathing, slowly dripping thionyl chloride is 20 milliliters, adds 10 milliliters of 98% vitriol oils again, places 2 hours for 20 ℃, and 80 ℃ of water-baths refluxed 30 minutes, and glycine is all dissolved.Underpressure distillation is removed and is added 50 milliliters of ether behind the methyl alcohol. have mass crystallization to separate out, placed 1 hour for 0 ℃, to be crystallized fully after, filter, use 25 milliliters of absolute ethanol washing crystallizations again, obtain GlyOCH
3
(2), protection HIS-GLY dipeptides is synthetic
Take by weighing 10.0 gram Boc
2-His is dissolved among 50 milliliters of anhydrous THF, be chilled to 0 ℃ with the cryosel bath, in stirring down, add respectively in advance with tetrahydrofuran (THF) dissolved 0.87 gram HOSu and 6.16 gram DCC (adding) with dropping funnel, drip and finish, reacted 30 minutes down in 0 ℃, add down in advance with DMF dissolved 3.54 gram GlyOCH at 0 ℃ then
3Reach 1.2 gram NMM, reacted 30 minutes down at 0 ℃ again, room temperature reaction is 4 hours then, (thin layer plate is commercially available silica gel G plate with TLC monitoring reaction process, developping agent is a sherwood oil: acetone=4: 1, the colour developing of 2% ethanol solution of ninhydrin), after reaction finishes, filter, the filtrate rotary evaporation to doing, is added 30 milliliters of entry, 50 milliliters of ethyl acetate, be transferred to the separating funnel separatory, water merges organic layer with an amount of ethyl acetate extraction (2 * 40 milliliters), uses distilled water respectively, saturated citric acid, saturated NaHCO
3Liquid and saturated NaCl liquid washing (2 * 30 milliliters) merge organic layer, and use anhydrous Na
2SO
4Dried overnight is filtered, and revolves to steam ethyl acetate, gets light yellow viscous liquid Boc
2-His-Gly OCH
3HCl;
(3), the HIS-GLY dipeptides of deaminizating protection is synthetic
With above-mentioned light yellow viscous liquid Boc
2-His-Gly OCH
3HCl adds saturated anhydrous HCl-ethyl acetate solution, stirring at room, and till no longer separating out a large amount of white precipitates (about 2~4 hours), after reaction finished, solvent evaporated on Rotary Evaporators obtained (His-Gly OCH
3HCl);
(4), protection Methionin-HIS-GLY is synthetic
With 14.4g His-Gly OCH
3HCl is dissolved in an amount of DMF, and (in 10~15ml), and add 5.7 gram N-methylmorpholines (NMM), 0 ℃ was stirred 30 minutes down then, obtained stand-by compound;
In 250 milliliters of round-bottomed flasks, add 19.03 gram Boc
2-Lys, with an amount of THF dissolving (about 50 milliliters), cryosel is bathed and is cooled to 0 ℃, under this temperature, drip with THF dissolved 11.81 gram DCC, 1.27 gram HOSu, drip finish after, under this temperature, continued stirring reaction 2 hours, drip stand-by compound and N-methylmorpholine DMF solution at 0 ℃ with dropping funnel then, drip and finish, continued stirring reaction 30 minutes at 0 ℃, be warming up to room temperature then, continued stirring reaction 36 hours, (thin layer plate is commercially available silica gel G plate, and developping agent is a sherwood oil: acetone=4: 1 with TLC monitoring reaction process, the colour developing of 2% ethanol solution of ninhydrin), reaction is finished, and with reacting liquid filtering, filtrate is revolved and steamed to doing, add the 60ml ethyl acetate, be transferred to separating funnel, add distilled water, separatory, water layer is used ethyl acetate extraction 2 times (2 * 60 milliliters) again, merge organic layer, use saturated citric acid respectively, saturated NaHCO
3Liquid and saturated NaCl liquid washing (3 * 30 milliliters) are washed till pH=7, the organic layer anhydrous Na
2SO
4Dried overnight is filtered, and vacuum rotary steam goes out solvent, obtains Boc
2-Lys-His-GlyOCH
3HCl:
(5), the Methionin-HIS-GLY tripeptides of deaminizating protection is synthetic
With above-mentioned Boc
2-Lys-His-GlyOCH
3HCl adds the saturated anhydrous HCl-ethyl acetate solution of about 150ml, about 3 hours of stirring at room, and after reaction finished, solvent evaporated on Rotary Evaporators obtained Lys-His-Gly OCH
3HCl;
(6), the bursa of Fabricius bursin crude product is synthetic
With Lys-His-Gly OCH
3The HCl anhydrous alcohol solution is cooled to 0 ℃ with the cryosel bath, feeds exsiccant NH
3To solution saturated (about 4~6 hours), room temperature was placed 3 days, and solution solvent evaporated on Rotary Evaporators is obtained crude product;
(7), purifying
With the crude product anhydrous alcohol solution, filter, with filtrate solvent evaporated on Rotary Evaporators, get the pure product Lys-His-Gly-NH of bursa of Fabricius bursin
2HCl, purity reaches more than 95%.
Embodiment 4:
(1), amino acid protection
A, with 13.1 the gram Methionins, 13.9 the gram Histidines be dissolved in 50 milliliters of 2moll
-1Among the NaOH, cryosel is bathed, and is added dropwise under stirring in advance with THF dissolved 22 grams (Boc)
2O is added dropwise to 2moll simultaneously
-1NaOH makes solution keep pH=9.Finish, rise to room temperature naturally, continue to stir 1 hour.Wash twice with 50 milliliters of ether, divide and remove the ether layer, water under agitation is added dropwise to 6moll
-1Hydrochloric acid adds 75 milliliters of ethyl acetate to pH value 1, continues to stir 6 minutes, and separatory, ethyl acetate layer is washed till neutrality with 5%NaCl, anhydrous Na
2SO
4Drying, underpressure distillation removes and desolvates, and obtains Z
2-Lys and Z
2-His;
B, with 5.9 the gram glycine be dissolved in 50 ml methanol, put in the cryosel bath and be cooled to-10 ℃, slowly dripping thionyl chloride is 20 milliliters, add 10 milliliters of 98% vitriol oils again, placed 2 hours for 20 ℃, 70 ℃ of water-baths refluxed 30 minutes, and glycine is all dissolved, and underpressure distillation adds 50 milliliters of ether after removing methyl alcohol. and there is mass crystallization to separate out.Placed 2 hours for 4 ℃, to be crystallized fully after, filter, use 25 milliliters of absolute ethanol washing crystallizations again.Obtain GlyOCH
3
(2), protection HIS-GLY dipeptides is synthetic
Take by weighing 10.0 gram Boc
2-His is dissolved among 50 milliliters of anhydrous THF, bathes with cryosel and is chilled to 0 ℃, in stirring down, adds respectively in advance with tetrahydrofuran (THF) dissolved 1.03 gram HOBt and 6.16 gram DCC (adding with dropping funnel).Drip and finish, reacted 30 minutes down, add down in advance with DMF dissolved 3.54 gram GlyOCH at 0 ℃ then in 0 ℃
3Reach 1.2 gram NMM, reacted 30 minutes down at 0 ℃ again, room temperature reaction is 4 hours then, and (thin layer plate is commercially available silica gel G plate, and developping agent is a sherwood oil: acetone=4: 1 with TLC monitoring reaction process, the colour developing of 2% ethanol solution of ninhydrin), after reaction finishes, filter, the filtrate rotary evaporation is extremely done, add 30 milliliters of entry, 50 milliliters of ethyl acetate are transferred to the separating funnel separatory, and water is with an amount of ethyl acetate extraction (2 * 40 milliliters), merge organic layer, use distilled water respectively, saturated citric acid, saturated NaHCO
3Liquid and saturated NaCl liquid washing (2 * 30 milliliters) merge organic layer, and use anhydrous Na
2SO
4Dried overnight is filtered, and revolves to steam ethyl acetate, gets light yellow viscous liquid Boc
2-His-Gly OCH
3HCl;
(3), the HIS-GLY dipeptides of deaminizating protection is synthetic
With above-mentioned light yellow viscous liquid Boc
2-His-Gly OCH
3HCl adds saturated anhydrous HCl-ethyl acetate solution, stirring at room, and till no longer separating out a large amount of white precipitates (about 2~4 hours), after reaction finished, solvent evaporated on Rotary Evaporators obtained His-Gly OCH
3HCl;
(4), protection Methionin-HIS-GLY is synthetic
His-Gly OCH with 14.4g
3HCl is dissolved in an amount of DMF, and (in 10~15ml), and add 5.7 gram N-methylmorpholines (NMM), 0 ℃ was stirred 30 minutes down then, reached stand-by mixture;
In 250 milliliters of round-bottomed flasks, add 19.03 gram Boc
2-Lys, with an amount of THF dissolving (about 50 milliliters), cryosel is bathed and is cooled to 5 ℃, under this temperature, drip with THF dissolved 11.81 gram DCC, 1.51 gram HOBt, drip finish after, under this temperature, continued stirring reaction 4 hours.Drip stand-by compound and N-methylmorpholine DMF solution at 0 ℃ with dropping funnel then, drip and finish, continue stirring reaction 30 minutes at 5 ℃, be warming up to room temperature then, continued stirring reaction 36 hours, (thin layer plate is commercially available silica gel G plate with TLC monitoring reaction process, developping agent is a sherwood oil: acetone=4: 1, the colour developing of 2% ethanol solution of ninhydrin), reaction is finished, with reacting liquid filtering, filtrate is revolved and is steamed to doing, and adds the 60ml ethyl acetate, is transferred to separating funnel, add distilled water, separatory, water layer are used ethyl acetate extraction 2 times (2 * 60 milliliters) again, merge organic layer, use saturated citric acid respectively, saturated NaHCO
3Liquid and saturated NaCl liquid washing (3 * 30 milliliters) are washed till pH=7, the organic layer anhydrous Na
2SO
4Dried overnight is filtered, and vacuum rotary steam goes out solvent, obtains Boc
2-Lys-His-GlyOCH
3HCl;
(5), the Methionin-HIS-GLY tripeptides of deaminizating protection is synthetic
With Boc
2-Lys-His-GlyOCH
3HCl adds the saturated anhydrous HCl-ethyl acetate solution of about 150ml, about 3 hours of stirring at room, and after reaction finished, solvent evaporated on Rotary Evaporators obtained Lys-His-GlyOCH
3HCl;
(6), the bursa of Fabricius bursin crude product is synthetic
With Lys-His-Gly OCH
3The HCl anhydrous alcohol solution is cooled to 0 ℃ with the cryosel bath, feeds exsiccant NH
3To solution saturated (about 4~6 hours), room temperature was placed 3 days, and solution solvent evaporated on Rotary Evaporators is obtained crude product;
(7), purifying
With the crude product anhydrous alcohol solution, filter, with filtrate solvent evaporated on Rotary Evaporators, get the pure product Lys-His-Gly-NH of bursa of Fabricius bursin
2HCl, purity reaches more than 95%.
Embodiment 5:
(1), amino acid protection
A, with 13.1 the gram Methionins, 13.9 the gram Histidines be dissolved in 50 milliliters of 2moll
-1Among the NaOH, cryosel is bathed, and is added dropwise in advance under stirring and restrains Fmoc-Cl with THF dissolved 52, is added dropwise to 2moll simultaneously
-1NaOH makes solution keep pH=9, finishes, and rises to room temperature naturally, continues to stir 1 hour, washes twice with 50 milliliters of ether, divides and removes the ether layer, and water under agitation is added dropwise to 6moll
-1Hydrochloric acid adds 75 milliliters of ethyl acetate to pH=1, continues to stir 10 minutes, and separatory, ethyl acetate layer is washed till neutrality with 5%NaCl, anhydrous Na
2SO
4Drying, underpressure distillation removes and desolvates, and obtains Fmoc
2-Lys and Fmoc
2-His;
B, 5.9 gram glycine are dissolved in 50 ml methanol, put cryosel and be cooled to-10 ℃ in bathing, slowly dripping thionyl chloride is 20 milliliters, adds 10 milliliters of 98% vitriol oils again.Placed 2 hours for 20 ℃, 80 ℃ of water-baths refluxed 30 minutes, and glycine is all dissolved.Underpressure distillation is removed and is added 50 milliliters of ether behind the methyl alcohol. have mass crystallization to separate out, placed 2 hours for 0 ℃, to be crystallized fully after, filter, use 25 milliliters of absolute ethanol washing crystallizations again.Obtain GlyOCH
3
(2), protection HIS-GLY dipeptides is synthetic
Take by weighing 16.81 gram Fmoc
2-His is dissolved among 50 milliliters of anhydrous THF, be chilled to 0 ℃ with the cryosel bath, in stirring down, add respectively in advance with tetrahydrofuran (THF) dissolved 0.87 gram HOSu and 6.16 gram DCC (adding) with dropping funnel, drip and finish, reacted 30 minutes down in 0 ℃, add down in advance with DMF dissolved 3.54 gram GlyOCH at 0 ℃ then
3, and 1.2 gram NMM, reacted 30 minutes down at 0 ℃ again, room temperature reaction is 4 hours then, and (thin layer plate is commercially available silica gel G plate, and developping agent is a sherwood oil: acetone=4: 1 with TLC monitoring reaction process, the colour developing of 2% ethanol solution of ninhydrin), after reaction finishes, filter, the filtrate rotary evaporation is extremely done, add 30 milliliters of entry, 50 milliliters of ethyl acetate are transferred to the separating funnel separatory, and water is with an amount of ethyl acetate extraction (2 * 40 milliliters).Merge organic layer, use distilled water respectively, saturated citric acid, saturated NaHCO
3Liquid and saturated NaCl liquid washing (2 * 30 milliliters) merge organic layer, and use anhydrous Na
2SO
4Drying 12 hours is filtered, and revolves to steam ethyl acetate, gets light yellow viscous liquid Fmoc
2-His-Gly OCH
3HCl;
(3), the HIS-GLY dipeptides of deaminizating protection is synthetic
With above-mentioned light yellow viscous liquid Fmoc
2-His-Gly OCH
3HCl adds saturated anhydrous HCl-ethyl acetate solution, stirring at room, and till no longer separating out a large amount of white precipitates (about 2~4 hours), after reaction finished, solvent evaporated on Rotary Evaporators obtained His-Gly OCH
3HCl;
(4), protection Methionin-HIS-GLY is synthetic.
His-Gly OCH with 14.4g
3HCl is dissolved in an amount of DMF, and (in 10~15ml), and add 5.7 gram N-methylmorpholines (NMM), 0 ℃ was stirred 30 minutes down then, obtained stand-by mixture;
In 250 milliliters of round-bottomed flasks, add 31.61 gram Fmoc
2-Lys, with an amount of THF dissolving (about 50 milliliters), cryosel is bathed and is cooled to 0 ℃, under this temperature, drip with THF dissolved 11.81 gram DCC, 1.27 gram HOSu, drip finish after, under this temperature, continued stirring reaction 3 hours, drip stand-by compound and N-methylmorpholine DMF solution at 0 ℃ with dropping funnel then, drip and finish, continued stirring reaction 30 minutes at 0 ℃, be warming up to room temperature then, continued stirring reaction 36 hours, (thin layer plate is commercially available silica gel G plate, and developping agent is a sherwood oil: acetone=4: 1 with TLC monitoring reaction process, the colour developing of 2% ethanol solution of ninhydrin), reaction is finished, and with reacting liquid filtering, filtrate is revolved and steamed to doing, add the 60ml ethyl acetate, be transferred to separating funnel, add distilled water, separatory, water layer is used ethyl acetate extraction 2 times (2 * 60 milliliters) again, merge organic layer, use saturated citric acid respectively, saturated NaHCO
3Liquid and saturated NaCl liquid washing (3 * 30 milliliters) are washed till pH=7, the organic layer anhydrous Na
2SO
4Dry 12 hours, filter, vacuum rotary steam goes out solvent, obtains Fmoc
2-Lys-His-GlyOCH
3HCl;
(5), the Methionin-HIS-GLY tripeptides of deaminizating protection is synthetic
With Fmoc
2-Lys-His-GlyOCH
3HCl adds the saturated anhydrous HCl-ethyl acetate solution of about 150ml, about 3 hours of stirring at room, and after reaction finished, solvent evaporated on Rotary Evaporators obtained Lys-His-Gly OCH
3HCl;
(6), the bursa of Fabricius bursin crude product is synthetic
With Lys-His-Gly OCH
3The HCl anhydrous alcohol solution is cooled to 0 ℃ with the cryosel bath, feeds exsiccant NH
3To solution saturated (about 4~6 hours), room temperature was placed 3 days.Solution solvent evaporated on Rotary Evaporators is obtained crude product;
(7), purifying.
With the crude product anhydrous alcohol solution, filter, with filtrate solvent evaporated on Rotary Evaporators, get the pure product Lys-His-Gly-NH of bursa of Fabricius bursin
2HCl, purity reaches more than 95%.
Embodiment 6:
(1), amino acid protection
A, with 13.1 the gram Methionins, 13.9 the gram Histidines be dissolved in 50 milliliters of 2moll
-1Among the NaOH, cryosel is bathed, and is added dropwise in advance under stirring and restrains Fmoc-Cl with THF dissolved 52, is added dropwise to 2moll simultaneously
-1NaOH makes solution keep pH=9, finishes, and rises to room temperature naturally, continues to stir 1 hour.Wash twice with 50 milliliters of ether, divide and remove the ether layer, water under agitation is added dropwise to 6moll
-1Hydrochloric acid adds 75 milliliters of ethyl acetate to pH=1, continues to stir 8 minutes, and separatory, ethyl acetate layer is washed till neutrality with 5%NaCl, anhydrous Na
2SO
4Drying, underpressure distillation removes and desolvates, and obtains Fmoc
2-Lys and Fmoc
2-His;
B, 5.9 gram glycine are dissolved in 50 ml methanol, put cryosel and be cooled to-10 ℃ in bathing, slowly dripping thionyl chloride is 20 milliliters, adds 10 milliliters of 98% vitriol oils again, places 2 hours for 20 ℃, and 75 ℃ of water-baths refluxed 30 minutes, and glycine is all dissolved.Underpressure distillation is removed and is added 50 milliliters of ether behind the methyl alcohol. have mass crystallization to separate out, placed 2 hours for 0 ℃, to be crystallized fully after, filter, use 25 milliliters of absolute ethanol washing crystallizations again, obtain GlyOCH
3
(2), protection HIS-GLY dipeptides is synthetic
Take by weighing 16.81 gram Fmoc
2-His is dissolved among 50 milliliters of anhydrous THF, bathes with cryosel and is chilled to 0 ℃, in stirring down, adds respectively in advance with tetrahydrofuran (THF) dissolved 1.03 gram HOBt and 6.16 gram DCC (adding with dropping funnel).Drip and finish, reacted 30 minutes down, add down in advance with DMF dissolved 3.54 gram GlyOCH at 0 ℃ then in 0 ℃
3Reach 1.2 gram NMM, reacted 30 minutes down at 0 ℃ again, room temperature reaction is 4 hours then, and (thin layer plate is commercially available silica gel G plate, and developping agent is a sherwood oil: acetone=4: 1 with TLC monitoring reaction process, the colour developing of 2% ethanol solution of ninhydrin), after reaction finishes, filter, the filtrate rotary evaporation is extremely done, add 30 milliliters of entry, 50 milliliters of ethyl acetate are transferred to the separating funnel separatory, and water is with an amount of ethyl acetate extraction (2 * 40 milliliters), merge organic layer, use distilled water respectively, saturated citric acid, saturated NaHCO
3Liquid and saturated NaCl liquid washing (2 * 30 milliliters) merge organic layer, and use anhydrous Na
2SO
4Drying 12 hours is filtered, and revolves to steam ethyl acetate, gets light yellow viscous liquid Fmoc
2-His-Gly OCH
3HCl;
(3), the HIS-GLY dipeptides of deaminizating protection is synthetic
With above-mentioned light yellow viscous liquid Fmoc
2-His-Gly OCH
3HCl adds saturated anhydrous HCl-ethyl acetate solution, stirring at room, and till no longer separating out a large amount of white precipitates (about 2~4 hours), after reaction finished, solvent evaporated on Rotary Evaporators obtained His-Gly OCH
3HCl;
(4), protection Methionin-HIS-GLY is synthetic
His-Gly OCH with 14.4g
3HCl is dissolved in an amount of DMF, and (in 10~15ml), and add 5.7 gram N-methylmorpholines (NMM), 0 ℃ was stirred 30 minutes down then, obtained stand-by mixture;
In 250 milliliters of round-bottomed flasks, add 31.61 gram Fmoc
2-Lys, with an amount of THF dissolving (about 50 milliliters), cryosel is bathed and is cooled to 0 ℃, under this temperature, drip with THF dissolved 11.81 gram DCC, 1.51 gram HOBt, drip finish after, under this temperature, continued stirring reaction 3 hours, drip stand-by compound and N-methylmorpholine DMF solution at 3 ℃ with dropping funnel then, drip and finish, continued stirring reaction 30 minutes at 3 ℃, be warming up to room temperature then, continued stirring reaction 36 hours, (thin layer plate is commercially available silica gel G plate, and developping agent is a sherwood oil: acetone=4: 1 with TLC monitoring reaction process, the colour developing of 2% ethanol solution of ninhydrin), reaction is finished, and with reacting liquid filtering, filtrate is revolved and steamed to doing, add the 60ml ethyl acetate, be transferred to separating funnel, add distilled water, separatory, water layer is used ethyl acetate extraction 2 times (2 * 60 milliliters) again, merge organic layer, use saturated citric acid respectively, saturated NaHCO
3Liquid and saturated NaCl liquid washing (3 * 30 milliliters) are washed till pH value 6~7, the organic layer anhydrous Na
2SO
4Dry 12 hours, filter, vacuum rotary steam goes out solvent, obtains Fmoc
2-Lys-His-GlyOCH
3HCl;
(5), the Methionin-HIS-GLY tripeptides of deaminizating protection is synthetic
With Fmoc
2-Lys-His-GlyOCH
3HCl adds the saturated anhydrous HCl-ethyl acetate solution of about 150ml, about 3 hours of stirring at room, and after reaction finished, solvent evaporated on Rotary Evaporators obtained Lys-His-Gly OCH
3HCl;
(6), the bursa of Fabricius bursin crude product is synthetic
With Lys-His-Gly OCH
3The HCl anhydrous alcohol solution is cooled to 0 ℃ with the cryosel bath, feeds exsiccant NH
3To solution saturated (about 4~6 hours), room temperature was placed 3 days, and solution solvent evaporated on Rotary Evaporators is obtained crude product;
(7), purifying
With the crude product anhydrous alcohol solution, filter, with filtrate solvent evaporated on Rotary Evaporators, get the pure product Lys-His-Gly-NH of bursa of Fabricius bursin
2HCl, purity reaches more than 95%.
Embodiment 7:
(1), amino acid protection
A, with 13.9 the gram Histidines be dissolved in 50 milliliters of 2moll
-1Among the NaOH, cryosel is bathed, and is added dropwise under stirring in advance with THF dissolved 22 grams (Boc)
2O is added dropwise to 2moll simultaneously
-1NaOH makes solution keep pH=9, finishes, and rises to room temperature naturally, continues to stir 1 hour, washes twice with 50 milliliters of ether, divides and removes the ether layer, and water under agitation is added dropwise to 6moll
-1Hydrochloric acid adds 75 milliliters of ethyl acetate to pH=1, continues to stir 5~10 minutes, and separatory, ethyl acetate layer is washed till neutrality with 5%NaCl, anhydrous Na
2SO
4Drying, underpressure distillation removes and desolvates, and obtains Boc
2-His;
B, with 13.1 the gram Methionins be dissolved in 50 milliliters of 2moll
-1Among the NaOH, cryosel is bathed, and is added dropwise in advance under stirring and restrains Fmoc-Cl with THF dissolved 52, is added dropwise to 2moll simultaneously
-1NaOH makes solution keep pH=9, finishes, and rises to room temperature naturally, continues to stir 1 hour, washes twice with 50 milliliters of ether, divides and removes the ether layer, and water under agitation is added dropwise to 6moll
-1Hydrochloric acid adds 75 milliliters of ethyl acetate to pH=1, continues to stir 6 minutes, and separatory, ethyl acetate layer is washed till neutrality with 5%NaCl, anhydrous Na
2SO
4Drying, underpressure distillation removes and desolvates, and obtains Fmoc
2-Lys;
C, 5.9 gram glycine are dissolved in 50 ml methanol, put cryosel and be cooled to-10 ℃ in bathing, slowly dripping thionyl chloride is 20 milliliters, adds 10 milliliters of 98% vitriol oils again.Placed 2 hours for 20 ℃, 80 ℃ of water-baths refluxed 30 minutes, and glycine is all dissolved, underpressure distillation is removed and is added 50 milliliters of ether behind the methyl alcohol. have mass crystallization to separate out, placed 2 hours for 0 ℃, to be crystallized fully after, filter, use 25 milliliters of absolute ethanol washing crystallizations again, obtain GlyOCH
3
(2), protection HIS-GLY dipeptides is synthetic
Take by weighing 10.0 gram Boc
2-His is dissolved among 50 milliliters of anhydrous THF, be chilled to 0 ℃ with the cryosel bath, in stirring down, add respectively in advance with tetrahydrofuran (THF) dissolved 0.87 gram HOSu and 6.16 gram DCC (adding) with dropping funnel, drip and finish, reacted 30 minutes down in 0 ℃, add down in advance with DMF dissolved 3.54 gram GlyOCH at 0 ℃ then
3Reach 1.2 gram NMM, reacted 30 minutes down at 0 ℃, room temperature reaction is 4 hours then, with TLC monitoring reaction process (thin layer plate is commercially available silica gel G plate, and developping agent is a sherwood oil: acetone=4: 1, the colour developing of 2% ethanol solution of ninhydrin).After reaction finishes, filter, the filtrate rotary evaporation to doing, is added 30 milliliters of entry, 50 milliliters of ethyl acetate are transferred to the separating funnel separatory, and water is with an amount of ethyl acetate extraction (2 * 40 milliliters).Merge organic layer, use distilled water respectively, saturated citric acid, saturated NaHCO
3Liquid and saturated NaCl liquid washing (2 * 30 milliliters) merge organic layer, and use anhydrous Na
2SO
4Drying 12 hours is filtered, and revolves to steam ethyl acetate, gets light yellow viscous liquid Boc
2-His-Gly OCH
3HCl;
(3), the HIS-GLY dipeptides of deaminizating protection is synthetic
With above-mentioned light yellow viscous liquid Boc
2-His-Gly OCH
3HCl adds saturated anhydrous HCl-ethyl acetate solution, stirring at room, and till no longer separating out a large amount of white precipitates (about 2~4 hours), after reaction finished, solvent evaporated on Rotary Evaporators obtained His-Gly OCH
3HCl;
(4), protection Methionin-HIS-GLY is synthetic
His-Gly OCH with 14.4g
3HCl is dissolved in an amount of DMF, and (in 10~15ml), and add 5.7 gram N-methylmorpholines (NMM), 0 ℃ was stirred 30 minutes down then, obtained stand-by mixture;
In 250 milliliters of round-bottomed flasks, add 31.61 gram Fmoc
2-Lys, with an amount of THF dissolving (about 50 milliliters), cryosel is bathed and is cooled to 0 ℃, under this temperature, drip with THF dissolved 11.81 gram DCC, 1.27 gram HOSu, drip finish after, under this temperature, continued stirring reaction 4 hours, drip stand-by compound and N-methylmorpholine DMF solution at 0 ℃ with dropping funnel then, drip and finish, continued stirring reaction 30 minutes at 0 ℃, be warming up to room temperature then, continued stirring reaction 36 hours, (thin layer plate is commercially available silica gel G plate, and developping agent is a sherwood oil: acetone=4: 1 with TLC monitoring reaction process, the colour developing of 2% ethanol solution of ninhydrin), reaction is finished, and with reacting liquid filtering, filtrate is revolved and steamed to doing, add the 60ml ethyl acetate, be transferred to separating funnel, add distilled water, separatory, water layer is used ethyl acetate extraction 2 times (2 * 60 milliliters) again, merge organic layer, use saturated citric acid respectively, saturated NaHCO
3Liquid and saturated NaCl liquid washing (3 * 30 milliliters) are washed till pH=7, the organic layer anhydrous Na
2SO
4Dry 12 hours, filter, vacuum rotary steam goes out solvent, obtains Fmoc
2-Lys-His-GlyOCH
3HCl;
(5), the Methionin-HIS-GLY tripeptides of deaminizating protection is synthetic
With Fmoc
2-Lys-His-GlyOCH
3HCl adds the saturated anhydrous HCl-ethyl acetate solution of about 150ml, about 3 hours of stirring at room, and after reaction finished, solvent evaporated on Rotary Evaporators obtained Lys-His-Gly OCH
3HCl;
(6), the bursa of Fabricius bursin crude product is synthetic
With Lys-His-Gly OCH
3The HCl anhydrous alcohol solution is cooled to 0 ℃ with the cryosel bath, feeds exsiccant NH
3To solution saturated (about 4~6 hours), room temperature was placed 3 days, and solution solvent evaporated on Rotary Evaporators is obtained crude product;
(7), purifying
With the crude product anhydrous alcohol solution, filter, with filtrate solvent evaporated on Rotary Evaporators, get the pure product Lys-His-Gly-NH of bursa of Fabricius bursin
2HCl, purity reaches more than 95%.
Embodiment 8:
(1), amino acid protection
A, with 13.9 the gram Histidines be dissolved in 50 milliliters of 2moll
-1Among the NaOH, cryosel is bathed, and is added dropwise under stirring in advance with THF dissolved 22 grams (Boc)
2O is added dropwise to 2moll simultaneously
-1NaOH makes solution keep pH=9, finishes, and rises to room temperature naturally, continues to stir 1 hour, washes twice with 50 milliliters of ether, divides and removes the ether layer, and water under agitation is added dropwise to 6moll
-1Hydrochloric acid adds 75 milliliters of ethyl acetate to pH=1, continues to stir 10 minutes, and separatory, ethyl acetate layer is washed till neutrality with 5%NaCl, anhydrous Na
2SO
4Drying, underpressure distillation removes and desolvates, and obtains Boc
2-His;
B, with 13.1 the gram Methionins be dissolved in 50 milliliters of 2moll
-1Among the NaOH, cryosel is bathed, and is added dropwise in advance under stirring and restrains Fmoc-Cl with THF dissolved 52, is added dropwise to 2moll simultaneously
-1NaOH makes solution keep pH=9, finishes, and rises to room temperature naturally, continues to stir 1 hour.Wash twice with 50 milliliters of ether, divide and remove the ether layer, water under agitation is added dropwise to 6moll
-1Hydrochloric acid adds 75 milliliters of ethyl acetate to pH=1, continues to stir 10 minutes, and separatory, ethyl acetate layer is washed till neutrality with 5%NaCl, anhydrous Na
2SO
4Drying, underpressure distillation removes and desolvates, and obtains Fmoc
2-Lys;
C, 5.9 gram glycine are dissolved in 50 ml methanol, put cryosel and be cooled to-10 ℃ in bathing, slowly dripping thionyl chloride is 20 milliliters, adds 10 milliliters of 98% vitriol oils again, places 2 hours for 20 ℃, and 80 ℃ of water-baths refluxed 30 minutes, and glycine is all dissolved.Underpressure distillation is removed and is added 50 milliliters of ether behind the methyl alcohol. have mass crystallization to separate out, placed 1 hour for 4 ℃, to be crystallized fully after, filter, use 25 milliliters of absolute ethanol washing crystallizations again, obtain GlyOCH
3
(2), protection HIS-GLY dipeptides is synthetic
Take by weighing 10.0 gram Boc
2-His is dissolved among 50 milliliters of anhydrous THF, be chilled to 0 ℃ with the cryosel bath, in stirring down, add respectively in advance with tetrahydrofuran (THF) dissolved 1.03 gram HOBt and 6.16 gram DCC (adding) with dropping funnel, drip and finish, reacted 30 minutes down in 0 ℃, add down in advance with DMF dissolved 3.54 gram GlyOCH at 0 ℃ then
3Reach 1.2 gram NMM, reacted 30 minutes down at 0 ℃ again, room temperature reaction is 4 hours then, and (thin layer plate is commercially available silica gel G plate, and developping agent is a sherwood oil: acetone=4: 1 with TLC monitoring reaction process, the colour developing of 2% ethanol solution of ninhydrin), after reaction finishes, filter, the filtrate rotary evaporation is extremely done, add 30 milliliters of entry, 50 milliliters of ethyl acetate are transferred to the separating funnel separatory, and water is with an amount of ethyl acetate extraction (2 * 40 milliliters), merge organic layer, use distilled water respectively, saturated citric acid, saturated NaHCO
3Liquid and saturated NaCl liquid washing (2 * 30 milliliters) merge organic layer, and use anhydrous Na
2SO
4Drying 12 hours is filtered, and revolves to steam ethyl acetate, gets light yellow viscous liquid Boc
2-His-Gly OCH
3HCl;
(3), the HIS-GLY dipeptides of deaminizating protection is synthetic
With above-mentioned light yellow viscous liquid Boc
2-His-Gly OCH
3HCl adds saturated anhydrous HCl-ethyl acetate solution, stirring at room, and till no longer separating out a large amount of white precipitates (about 2~4 hours), after reaction finished, solvent evaporated on Rotary Evaporators obtained His-Gly OCH
3HCl;
(4), protection Methionin-HIS-GLY is synthetic
His-Gly OCH with 14.4g
3HCl is dissolved in an amount of DMF, and (in 10~15ml), and add 5.7 gram N-methylmorpholines (NMM), 0 ℃ was stirred 30 minutes down then, obtained stand-by mixture;
In 250 milliliters of round-bottomed flasks, add 31.61 gram Fmoc
2-Lys, with an amount of THF dissolving (about 50 milliliters), cryosel is bathed and is cooled to 0 ℃, under this temperature, drip with THF dissolved 11.81 gram DCC, 1.27 gram HOSu, drip finish after, under this temperature, continued stirring reaction 4 hours, drip stand-by compound and N-methylmorpholine DMF solution at 0 ℃ with dropping funnel then, drip and finish, continued stirring reaction 30 minutes at 0 ℃, be warming up to room temperature then, continued stirring reaction 36 hours, (thin layer plate is commercially available silica gel G plate, and developping agent is a sherwood oil: acetone=4: 1 with TLC monitoring reaction process, the colour developing of 2% ethanol solution of ninhydrin), reaction finishes, and with reacting liquid filtering, filtrate is revolved and steamed to doing, add the 60ml ethyl acetate, be transferred to separating funnel, add distilled water, separatory, water layer is used ethyl acetate extraction 2 times (2 * 60 milliliters) again, merge organic layer, use saturated citric acid respectively, saturated NaHCO
3Liquid and saturated NaCl liquid washing (3 * 30 milliliters) are washed till pH=6, the organic layer anhydrous Na
2SO
4Dry 14 hours, filter, vacuum rotary steam goes out solvent, obtains Fmoc
2-Lys-His-GlyOCH
3HCl;
(5), the Methionin-HIS-GLY tripeptides of deaminizating protection is synthetic
With Fmoc
2-Lys-His-GlyOCH
3HCl adds the saturated anhydrous HCl-ethyl acetate solution of about 150ml, about 3 hours of stirring at room, and after reaction finished, solvent evaporated on Rotary Evaporators obtained Lys-His-Gly OCH
3HCl;
(6), the bursa of Fabricius bursin crude product is synthetic
With Lys-His-Gly OCH
3The HCl anhydrous alcohol solution is cooled to 0 ℃ with the cryosel bath, feeds exsiccant NH
3To solution saturated (about 4~6 hours), room temperature was placed 3 days, and solution solvent evaporated on Rotary Evaporators is obtained crude product;
(7), purifying
With the crude product anhydrous alcohol solution, filter, with filtrate solvent evaporated on Rotary Evaporators, get the pure product Lys-His-Gly-NH of bursa of Fabricius bursin
2HCl, purity reaches more than 95%.
Embodiment 9:
A, with 13.9 the gram Histidines be dissolved in 50 milliliters of 2moll
-1Among the NaOH, cryosel is bathed, and is added dropwise under stirring in advance with THF dissolved 22 grams (Boc)
2O is added dropwise to 2moll simultaneously
-1NaOH makes solution keep pH=9, finishes, and rises to room temperature naturally, continues to stir 1 hour, washes twice with 50 milliliters of ether, divides and removes the ether layer, and water under agitation is added dropwise to 6moll
-1Hydrochloric acid adds 75 milliliters of ethyl acetate to pH=1, continues to stir 10 minutes, and separatory, ethyl acetate layer is washed till neutrality with 5%NaCl, anhydrous Na
2SO
4Drying, underpressure distillation removes and desolvates, and obtains Boc
2-His;
B, with 13.1 the gram Methionins be dissolved in 50 milliliters of 2moll
-1Among the NaOH, cryosel is bathed, and is added dropwise in advance under stirring and restrains Z-Cl with THF dissolved 34.1, is added dropwise to 2moll simultaneously
-1NaOH makes solution keep pH=9, finishes, and rises to room temperature naturally, continues to stir 1 hour, washes twice with 50 milliliters of ether, divides and removes the ether layer, and water under agitation is added dropwise to 6moll
-1Hydrochloric acid adds 75 milliliters of ethyl acetate to pH=1, continues to stir 10 minutes, and separatory, ethyl acetate layer is washed till neutrality with 5%NaCl, anhydrous Na
2SO
4Drying, underpressure distillation removes and desolvates, and obtains Z
2-Lys;
C, 5.9 gram glycine are dissolved in 50 ml methanol, put cryosel and be cooled to-10 ℃ in bathing, slowly dripping thionyl chloride is 20 milliliters, add 10 milliliters of 98% vitriol oils again, placed 2 hours for 20 ℃, 70 ℃ of water-baths refluxed 30 minutes, and glycine is all dissolved, underpressure distillation adds 50 milliliters of ether after removing methyl alcohol. and there is mass crystallization to separate out, placed 1 hour for 4 ℃, to be crystallized fully after, filter, use 25 milliliters of absolute ethanol washing crystallizations again, obtain GlyOCH
3
(2), protection HIS-GLY dipeptides is synthetic
Take by weighing 10.0 gram Boc
2-His is dissolved among 50 milliliters of anhydrous THF, be chilled to 0 ℃ with the cryosel bath, in stirring down, add respectively in advance with tetrahydrofuran (THF) dissolved 0.87 gram HOSu and 6.16 gram DCC (adding) with dropping funnel, drip off, reacted 30 minutes down in 0 ℃, add down in advance with DMF dissolved 3.54 gram GlyOCH at 0 ℃ then
3Reach 1.2 gram NMM, reacted 30 minutes down at 0 ℃ again, room temperature reaction is 4 hours then, (thin layer plate is commercially available silica gel G plate with TLC monitoring reaction process, developping agent is a sherwood oil: acetone=4: 1, the colour developing of 2% ethanol solution of ninhydrin), after reaction finishes, filter, the filtrate rotary evaporation to doing, is added 30 milliliters of entry, 50 milliliters of ethyl acetate, be transferred to the separating funnel separatory, water merges organic layer with an amount of ethyl acetate extraction (2 * 40 milliliters), uses distilled water respectively, saturated citric acid, saturated NaHCO
3Liquid and saturated NaCl liquid washing (2 * 30 milliliters) merge organic layer, and use anhydrous Na
2SO
4Dried overnight is filtered, and revolves to steam ethyl acetate, gets light yellow viscous liquid Boc
2-His-Gly OCH
3HCl;
(3), the HIS-GLY dipeptides of deaminizating protection is synthetic
With above-mentioned light yellow viscous liquid Boc
2-His-Gly OCH
3HCl adds saturated anhydrous HCl-ethyl acetate solution, stirring at room, and till no longer separating out a large amount of white precipitates (about 2~4 hours), after reaction finished, solvent evaporated on Rotary Evaporators obtained His-Gly OCH
3HCl;
(4), protection Methionin-HIS-GLY is synthetic
His-Gly OCH with 14.4g
3HCl is dissolved in an amount of DMF, and (in 10~15ml), and add 5.7 gram N-methylmorpholines (NMM), 0 ℃ was stirred 30 minutes down then, obtained stand-by mixture;
In 250 milliliters of round-bottomed flasks, add 21.91 gram Z
2-Lys, with an amount of THF dissolving (about 50 milliliters), cryosel is bathed and is cooled to 0 ℃, under this temperature, drip with THF dissolved 11.81 gram DCC, 1.27 gram HOSu, drip finish after, under this temperature, continued stirring reaction 3 hours.Drip stand-by compound and N-methylmorpholine DMF solution at 0 ℃ with dropping funnel then, drip and finish, continue stirring reaction 30 minutes at 0 ℃, be warming up to room temperature then, continued stirring reaction 36 hours, (thin layer plate is commercially available silica gel G plate with TLC monitoring reaction process, developping agent is a sherwood oil: acetone=4: 1, the colour developing of 2% ethanol solution of ninhydrin), reaction is finished, with reacting liquid filtering, filtrate is revolved and is steamed to doing, and adds the 60ml ethyl acetate, is transferred to separating funnel, add distilled water, separatory, water layer are used ethyl acetate extraction 2 times (2 * 60 milliliters) again, merge organic layer, use saturated citric acid respectively, saturated NaHCO
3Liquid and saturated NaCl liquid washing (3 * 30 milliliters) are washed till pH=6, the organic layer anhydrous Na
2SO
4Dry 12 hours, filter, vacuum rotary steam goes out solvent, obtains Z
2-Lys-His-GlyOCH
3HCl;
(5), the Methionin-HIS-GLY tripeptides of deaminizating protection is synthetic
With Z
2-Lys-His-GlyOCH
3HCl adds the saturated anhydrous HCl-ethyl acetate solution of about 150ml, about 3 hours of stirring at room, and after reaction finished, solvent evaporated on Rotary Evaporators obtained Lys-His-GlyOCH
3HCl;
(6), the bursa of Fabricius bursin crude product is synthetic
With Lys-His-Gly OCH
3The HCl anhydrous alcohol solution is cooled to 0 ℃ with the cryosel bath, feeds exsiccant NH
3To solution saturated (about 4~6 hours), room temperature was placed 3 days, and solution solvent evaporated on Rotary Evaporators is obtained crude product;
(7), purifying
With the crude product anhydrous alcohol solution, filter, with filtrate solvent evaporated on Rotary Evaporators, get the pure product Lys-His-Gly-NH of bursa of Fabricius bursin
2HCl, purity reaches more than 95%.
Embodiment 10:
A, with 13.9 the gram Histidines be dissolved in 50 milliliters of 2moll
-1Among the NaOH, cryosel is bathed, and is added dropwise under stirring in advance with THF dissolved 22 grams (Boc)
2O is added dropwise to 2moll simultaneously
-1NaOH makes solution keep pH=9, finishes, and rises to room temperature naturally, continues to stir 1 hour, washes twice with 50 milliliters of ether, divides and removes the ether layer, and water under agitation is added dropwise to 6moll
-1Hydrochloric acid adds 75 milliliters of ethyl acetate to pH=1, continues to stir 8 minutes, and separatory, ethyl acetate layer is washed till neutrality with 5%NaCl, anhydrous Na
2SO
4Drying, underpressure distillation removes and desolvates, and obtains Boc
2-His;
B, with 13.1 the gram Methionins be dissolved in 50 milliliters of 2moll
-1Among the NaOH, cryosel is bathed, and is added dropwise in advance under stirring and restrains Z-Cl with THF dissolved 34.1, is added dropwise to 2moll simultaneously
-1NaOH makes solution keep pH=9, finishes, and rises to room temperature naturally, continues to stir 1 hour, washes twice with 50 milliliters of ether, divides and removes the ether layer, and water under agitation is added dropwise to 6moll
-1Hydrochloric acid adds 75 milliliters of ethyl acetate to pH=1, continues to stir 8 minutes, and separatory, ethyl acetate layer is washed till neutrality with 5%NaCl, anhydrous Na
2SO
4Drying, underpressure distillation removes and desolvates, and obtains Z
2-Lys;
C, 5.9 gram glycine are dissolved in 50 ml methanol, put cryosel and be cooled to-10 ℃ in bathing, slowly dripping thionyl chloride is 20 milliliters, adds 10 milliliters of 98% vitriol oils again.Placed 2 hours for 20 ℃, 80 ℃ of water-baths refluxed 30 minutes, and glycine is all dissolved, underpressure distillation is removed and is added 50 milliliters of ether behind the methyl alcohol. have mass crystallization to separate out, placed 2 hours for 0 ℃, to be crystallized fully after, filter, use 25 milliliters of absolute ethanol washing crystallizations again, obtain GlyOCH
3
(2), protection HIS-GLY dipeptides is synthetic
Take by weighing 10.0 gram Boc
2-His is dissolved among 50 milliliters of anhydrous THF, bathes with cryosel and is chilled to 0 ℃, in stirring down, adds respectively in advance with tetrahydrofuran (THF) dissolved 1.03 gram HOBt and 6.16 gram DCC (adding with dropping funnel).Drip and finish, reacted 30 minutes down, add down in advance with DMF dissolved 3.54 gram GlyOCH at 0 ℃ then in 0 ℃
3Reach 1.2 gram NMM, reacted 30 minutes down at 0 ℃, room temperature reaction is 4 hours then, (thin layer plate is commercially available silica gel G plate with TLC monitoring reaction process, developping agent is a sherwood oil: acetone=4: 1, the colour developing of 2% ethanol solution of ninhydrin), after reaction finishes, filter, the filtrate rotary evaporation to doing, is added 30 milliliters of entry, 50 milliliters of ethyl acetate, be transferred to the separating funnel separatory, water is with an amount of ethyl acetate extraction (2 * 40 milliliters).Merge organic layer, use distilled water respectively, saturated citric acid, saturated NaHCO
3Liquid and saturated NaCl liquid washing (2 * 30 milliliters).Merge organic layer, and use anhydrous Na
2SO
4Dried overnight is filtered, and revolves to steam ethyl acetate, gets light yellow viscous liquid Boc
2-His-Gly OCH
3HCl;
(3), the HIS-GLY dipeptides of deaminizating protection is synthetic
With above-mentioned light yellow viscous liquid (Boc
2-His-Gly OCH
3HCl) add saturated anhydrous HCl-ethyl acetate solution, stirring at room, till no longer separating out a large amount of white precipitates (about 2~4 hours), after reaction finished, solvent evaporated on Rotary Evaporators obtained His-Gly OCH
3HCl;
(4), protection Methionin-HIS-GLY is synthetic
His-Gly OCH with 14.4g
3HCl is dissolved in an amount of DMF, and (in 10~15ml), and add 5.7 gram N-methylmorpholines (NMM), 0 ℃ was stirred 30 minutes down then, obtained stand-by mixture;
In 250 milliliters of round-bottomed flasks, add 21.91 gram Z
2-Lys, with an amount of THF dissolving (about 50 milliliters), cryosel is bathed and is cooled to 2 ℃, under this temperature, drip with THF dissolved 11.81 gram DCC, 1.27 gram HOSu, drip finish after, under this temperature, continued stirring reaction 3 hours, drip stand-by compound and N-methylmorpholine DMF solution at 0 ℃ with dropping funnel then, drip and finish, continued stirring reaction 30 minutes at 0 ℃, be warming up to room temperature then, continued stirring reaction 36 hours, (thin layer plate is commercially available silica gel G plate, and developping agent is a sherwood oil: acetone=4: 1 with TLC monitoring reaction process, the colour developing of 2% ethanol solution of ninhydrin), reaction is finished, and with reacting liquid filtering, filtrate is revolved and steamed to doing, add the 60ml ethyl acetate, be transferred to separating funnel, add distilled water, separatory, water layer is used ethyl acetate extraction 2 times (2 * 60 milliliters) again, merge organic layer, use saturated citric acid respectively, saturated NaHCO
3Liquid and saturated NaCl liquid washing (3 * 30 milliliters) are washed till pH=6, the organic layer anhydrous Na
2SO
4Dry 12 hours, filter, vacuum rotary steam goes out solvent, obtains Z
2-Lys-His-GlyOCH
3HCl;
(5), the Methionin-HIS-GLY tripeptides of deaminizating protection is synthetic
With Z
2-Lys-His-GlyOCH
3HCl adds the saturated anhydrous HCl-ethyl acetate solution of about 150ml, about 3 hours of stirring at room, and after reaction finished, solvent evaporated on Rotary Evaporators obtained Lys-His-GlyOCH
3HCl;
(6), the bursa of Fabricius bursin crude product is synthetic
With Lys-His-Gly OCH
3The HCl anhydrous alcohol solution is cooled to 0 ℃ with the cryosel bath, feeds exsiccant NH
3To solution saturated (about 4~6 hours), room temperature was placed 3 days.Solution solvent evaporated on Rotary Evaporators is obtained crude product;
(7), purifying
With the crude product anhydrous alcohol solution, filter, with filtrate solvent evaporated on Rotary Evaporators, get the pure product Lys-His-Gly-NH of bursa of Fabricius bursin
2HCl, purity reaches more than 95%.
Embodiment 11:
(1), amino acid protection
A, with 13.9 the gram Histidines be dissolved in 50 milliliters of 2moll
-1Among the NaOH, cryosel is bathed, and is added dropwise under stirring in advance with THF dissolved 22 grams (Boc)
2O is added dropwise to 2moll simultaneously
-1NaOH makes solution keep pH=9, finishes, and rises to room temperature naturally, continues to stir 1 hour, washes twice with 50 milliliters of ether, divides and removes the ether layer, and water under agitation is added dropwise to 6moll
-1Hydrochloric acid adds 75 milliliters of ethyl acetate to pH=1, continues to stir 8 minutes, and separatory, ethyl acetate layer is washed till neutrality with 5%NaCl, anhydrous Na
2SO
4Drying, underpressure distillation removes and desolvates, and obtains Boc
2-His;
B, with 13.1 the gram Methionins be dissolved in 50 milliliters of 2moll
-1Among the NaOH, cryosel is bathed, and is added dropwise in advance under stirring and restrains Fmoc-Cl with THF dissolved 52, is added dropwise to 2moll simultaneously
-1NaOH makes solution keep pH=9, finishes, and rises to room temperature naturally, continues to stir 1 hour, washes twice with 50 milliliters of ether, divides and removes the ether layer, and water under agitation is added dropwise to 6moll
-1Hydrochloric acid adds 75 milliliters of ethyl acetate to pH=1, continues to stir 8 minutes, and separatory, ethyl acetate layer is washed till neutrality with 5%NaCl, anhydrous Na
2SO
4Drying, underpressure distillation removes and desolvates, and obtains Fmoc
2-Lys;
C, 5.9 gram glycine are dissolved in 50 ml methanol, put cryosel and be cooled to-10 ℃ in bathing, slowly dripping thionyl chloride is 20 milliliters, adds 10 milliliters of 98% vitriol oils again, places 2 hours for 20 ℃, and 80 ℃ of water-baths refluxed 30 minutes, and glycine is all dissolved.Underpressure distillation is removed and is added 50 milliliters of ether behind the methyl alcohol. have mass crystallization to separate out, placed 1 hour for 3 ℃, to be crystallized fully after, filter, use 25 milliliters of absolute ethanol washing crystallizations again, obtain GlyOCH
3
(2), protection HIS-GLY dipeptides is synthetic
Take by weighing 10.0 gram Boc
2-His is dissolved among 50 milliliters of anhydrous THF, be chilled to 0 ℃ with the cryosel bath, in stirring down, add respectively in advance with tetrahydrofuran (THF) dissolved 0.87 gram HOSu and 6.16 gram DCC (adding) with dropping funnel, drip and finish, reacted 30 minutes down in 0 ℃, add down in advance with DMF dissolved 3.54 gram GlyOCH at 0 ℃ then
3Reach 1.2 gram NMM, reacted 30 minutes down at 0 ℃ again, room temperature reaction is 4 hours then, (thin layer plate is commercially available silica gel G plate with TLC monitoring reaction process, developping agent is a sherwood oil: acetone=4: 1, the colour developing of 2% ethanol solution of ninhydrin), after reaction finishes, filter, the filtrate rotary evaporation to doing, is added 30 milliliters of entry, 50 milliliters of ethyl acetate, be transferred to the separating funnel separatory, water merges organic layer with an amount of ethyl acetate extraction (2 * 40 milliliters), uses distilled water respectively, saturated citric acid, saturated NaHCO
3Liquid and saturated NaCl liquid washing (2 * 30 milliliters) merge organic layer, and use anhydrous Na
2SO
4Drying 12 hours is filtered, and revolves to steam ethyl acetate, gets light yellow viscous liquid Boc
2-His-Gly OCH
3HCl;
(3), the HIS-GLY dipeptides of deaminizating protection is synthetic
With above-mentioned light yellow viscous liquid Boc
2-His-Gly OCH
3HCl adds saturated anhydrous HCl-ethyl acetate solution, stirring at room, and till no longer separating out a large amount of white precipitates (about 2~4 hours), after reaction finished, solvent evaporated on Rotary Evaporators obtained His-Gly OCH
3HCl;
(4), protection Methionin-HIS-GLY is synthetic
His-Gly OCH with 14.4g
3HCl is dissolved in an amount of DMF, and (in 10~15ml), and add 5.7 gram N-methylmorpholines (NMM), 0 ℃ was stirred 30 minutes down then, obtained stand-by mixture;
In 250 milliliters of round-bottomed flasks, add 31.61 gram Fmoc
2-Lys, with an amount of THF dissolving (about 50 milliliters), cryosel is bathed and is cooled to 3 ℃, under this temperature, drip with THF dissolved 1.81 gram DCC, 1.51 gram HOBt, drip finish after, under this temperature, continued stirring reaction 3 hours, drip stand-by compound and N-methylmorpholine DMF solution at 4 ℃ with dropping funnel then, drip and finish, continued stirring reaction 30 minutes at 3 ℃, be warming up to room temperature then, continued stirring reaction 36 hours, (thin layer plate is commercially available silica gel G plate, and developping agent is a sherwood oil: acetone=4: 1 with TLC monitoring reaction process, the colour developing of 2% ethanol solution of ninhydrin), reaction is finished, and with reacting liquid filtering, filtrate is revolved and steamed to doing, add the 60ml ethyl acetate, be transferred to separating funnel, add distilled water, separatory, water layer is used ethyl acetate extraction 2 times (2 * 60 milliliters) again, merge organic layer, use saturated citric acid respectively, saturated NaHCO
3Liquid and saturated NaCl liquid washing (3 * 30 milliliters) are washed till pH=6, the organic layer anhydrous Na
2SO
4Dry 13 hours, filter, vacuum rotary steam goes out solvent, obtains Fmoc
2-Lys-His-GlyOCH
3HCl;
(5), the Methionin-HIS-GLY tripeptides of deaminizating protection is synthetic
With Fmoc
2-Lys-His-GlyOCH
3HCl adds the saturated anhydrous HCl-ethyl acetate solution of about 150ml, about 3 hours of stirring at room, and after reaction finished, solvent evaporated on Rotary Evaporators obtained Lys-His-Gly OCH
3HCl;
(6), the bursa of Fabricius bursin crude product is synthetic
With Lys-His-Gly OCH
3The HCl anhydrous alcohol solution is cooled to 2 ℃ with the cryosel bath, feeds exsiccant NH
3To solution saturated (about 4~6 hours), room temperature was placed 3 days, and solution solvent evaporated on Rotary Evaporators is obtained crude product;
(7), purifying
With the crude product anhydrous alcohol solution, filter, with filtrate solvent evaporated on Rotary Evaporators, get the pure product Lys-His-Gly-NH of bursa of Fabricius bursin
2HCl, purity reaches more than 95%.
Embodiment 12:
A, with 13.9 the gram Histidines be dissolved in 50 milliliters of 2moll
-1Among the NaOH, cryosel is bathed, and is added dropwise under stirring in advance with THF dissolved 22 grams (Boc)
2O is added dropwise to 2moll simultaneously
-1NaOH makes solution keep pH=9, finishes, and rises to room temperature naturally, continues to stir 1 hour, washes twice with 50 milliliters of ether, divides and removes the ether layer, and water under agitation is added dropwise to 6moll
-1Hydrochloric acid adds 75 milliliters of ethyl acetate to pH=1, continues to stir 7 minutes, and separatory, ethyl acetate layer is washed till neutrality with 5%NaCl, anhydrous Na
2SO
4Drying, underpressure distillation removes and desolvates, and obtains Boc
2-His;
B, with 13.1 the gram Methionins be dissolved in 50 milliliters of 2moll
-1Among the NaOH, cryosel is bathed, and is added dropwise in advance under stirring and restrains Z-Cl with THF dissolved 34.1, is added dropwise to 2moll simultaneously
-1NaOH makes solution keep pH=9, finishes, and rises to room temperature naturally, continues to stir 1 hour, washes twice with 50 milliliters of ether, divides and removes the ether layer, and water under agitation is added dropwise to 6moll
-1Hydrochloric acid adds 75 milliliters of ethyl acetate to pH=1, continues to stir 7 minutes, and separatory, ethyl acetate layer is washed till neutrality with 5%NaCl, anhydrous Na
2SO
4Drying, underpressure distillation removes and desolvates, and obtains Z
2-Lys;
C, 5.9 gram glycine are dissolved in 50 ml methanol, put cryosel and be cooled to-10 ℃ in bathing, slowly dripping thionyl chloride is 20 milliliters, add 10 milliliters of 98% vitriol oils again, placed 2 hours for 20 ℃, 75 ℃ of water-baths refluxed 30 minutes, and glycine is all dissolved, underpressure distillation adds 50 milliliters of ether after removing methyl alcohol. and there is mass crystallization to separate out, placed 1.5 hours for 2 ℃, to be crystallized fully after, filter, use 25 milliliters of absolute ethanol washing crystallizations again, obtain GlyOCH
3
(2), protection HIS-GLY dipeptides is synthetic
Take by weighing 10.0 gram Boc
2-His is dissolved among 50 milliliters of anhydrous THF, be chilled to 0 ℃ with the cryosel bath, in stirring down, add respectively in advance with tetrahydrofuran (THF) dissolved 1.03 gram HOBt and 6.16 gram DCC (adding) with dropping funnel, drip and finish, reacted 30 minutes down in 0 ℃, add down in advance with DMF dissolved 3.54 gram GlyOCH at 0 ℃ then
3Reach 1.2 gram NMM, reacted 30 minutes down at 0 ℃, room temperature reaction is 4 hours then, (thin layer plate is commercially available silica gel G plate with TLC monitoring reaction process, developping agent is a sherwood oil: acetone=4: 1, the colour developing of 2% ethanol solution of ninhydrin), after reaction finishes, filter, the filtrate rotary evaporation to doing, is added 30 milliliters of entry, 50 milliliters of ethyl acetate, be transferred to the separating funnel separatory, water is with an amount of ethyl acetate extraction (2 * 40 milliliters).Merge organic layer, use distilled water respectively, saturated citric acid, saturated NaHCO
3Liquid and saturated NaCl liquid washing (2 * 30 milliliters) merge organic layer, and use anhydrous Na
2SO
4Drying 12 hours is filtered, and revolves to steam ethyl acetate, gets light yellow viscous liquid Boc
2-His-Gly OCH
3HCl;
(3), the HIS-GLY dipeptides of deaminizating protection is synthetic
With above-mentioned light yellow viscous liquid Boc
2-His-Gly OCH
3HCl adds saturated anhydrous HCl-ethyl acetate solution, stirring at room, and till no longer separating out a large amount of white precipitates (about 2~4 hours), after reaction finished, solvent evaporated on Rotary Evaporators obtained His-Gly OCH
3HCl;
(4), protection Methionin-HIS-GLY is synthetic
His-Gly OCH with 14.4g
3HCl is dissolved in an amount of DMF, and (in 10~15ml), and add 5.7 gram N-methylmorpholines (NMM), 0 ℃ was stirred 30 minutes down then, obtained stand-by mixture;
In 250 milliliters of round-bottomed flasks, add 21.91 gram Z
2-Lys, with an amount of THF dissolving (about 50 milliliters), cryosel is bathed and is cooled to 0 ℃, under this temperature, drip with THF dissolved 11.81 gram DCC, 1.51 gram HOBt, drip finish after, under this temperature, continued stirring reaction 3 hours.Drip stand-by compound and N-methylmorpholine DMF solution at 0 ℃ with dropping funnel then, drip and finish, continue stirring reaction 30 minutes at 0 ℃, be warming up to room temperature then, continued stirring reaction 36 hours, (thin layer plate is commercially available silica gel G plate with TLC monitoring reaction process, developping agent is a sherwood oil: acetone=4: 1, the colour developing of 2% ethanol solution of ninhydrin), reaction is finished, with reacting liquid filtering, filtrate is revolved and is steamed to doing, and adds the 60ml ethyl acetate, is transferred to separating funnel, add distilled water, separatory, water layer are used ethyl acetate extraction 2 times (2 * 60 milliliters) again, merge organic layer, use saturated citric acid respectively, saturated NaHCO
3Liquid and saturated NaCl liquid washing (3 * 30 milliliters) are washed till pH=7, the organic layer anhydrous Na
2SO
4Dry 12 hours, filter, vacuum rotary steam goes out solvent, obtains Z
2-Lys-His-GlyOCH
3HCl;
(5), the Methionin-HIS-GLY tripeptides of deaminizating protection is synthetic
With Z
2-Lys-His-GlyOCH
3HCl adds the saturated anhydrous HCl-ethyl acetate solution of about 150ml, about 3 hours of stirring at room, and after reaction finished, solvent evaporated on Rotary Evaporators obtained Lys-His-GlyOCH
3HCl;
(6), the bursa of Fabricius bursin crude product is synthetic
With Lys-His-Gly OCH
3The HCl anhydrous alcohol solution is cooled to 4 ℃ with the cryosel bath, feeds exsiccant NH
3To solution saturated (about 4~6 hours), room temperature was placed 3 days, and solution solvent evaporated on Rotary Evaporators is obtained crude product;
(7), purifying
With the crude product anhydrous alcohol solution, filter, with filtrate solvent evaporated on Rotary Evaporators, get the pure product Lys-His-Gly-NH of bursa of Fabricius bursin
2HCl, purity reaches more than 95%.