FI56823C - FOERFARANDE FOER FRAMSTAELLNING AV FENYLAMINOETANOLDERIVAT - Google Patents
FOERFARANDE FOER FRAMSTAELLNING AV FENYLAMINOETANOLDERIVAT Download PDFInfo
- Publication number
- FI56823C FI56823C FI1389/71A FI138971A FI56823C FI 56823 C FI56823 C FI 56823C FI 1389/71 A FI1389/71 A FI 1389/71A FI 138971 A FI138971 A FI 138971A FI 56823 C FI56823 C FI 56823C
- Authority
- FI
- Finland
- Prior art keywords
- formaldehyde
- benzyl
- process according
- preparation
- borate
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C213/00—Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton
- C07C213/10—Separation; Purification; Stabilisation; Use of additives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/82—Purification; Separation; Stabilisation; Use of additives
- C07C209/84—Purification
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C213/00—Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton
- C07C213/08—Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton by reactions not involving the formation of amino groups, hydroxy groups or etherified or esterified hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C215/00—Compounds containing amino and hydroxy groups bound to the same carbon skeleton
- C07C215/46—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups bound to carbon atoms of at least one six-membered aromatic ring and amino groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings of the same carbon skeleton
- C07C215/56—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups bound to carbon atoms of at least one six-membered aromatic ring and amino groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings of the same carbon skeleton with amino groups linked to the six-membered aromatic ring, or to the condensed ring system containing that ring, by carbon chains further substituted by hydroxy groups
- C07C215/58—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups bound to carbon atoms of at least one six-membered aromatic ring and amino groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings of the same carbon skeleton with amino groups linked to the six-membered aromatic ring, or to the condensed ring system containing that ring, by carbon chains further substituted by hydroxy groups with hydroxy groups and the six-membered aromatic ring, or the condensed ring system containing that ring, bound to the same carbon atom of the carbon chain
- C07C215/60—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups bound to carbon atoms of at least one six-membered aromatic ring and amino groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings of the same carbon skeleton with amino groups linked to the six-membered aromatic ring, or to the condensed ring system containing that ring, by carbon chains further substituted by hydroxy groups with hydroxy groups and the six-membered aromatic ring, or the condensed ring system containing that ring, bound to the same carbon atom of the carbon chain the chain having two carbon atoms between the amino groups and the six-membered aromatic ring or the condensed ring system containing that ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2601/00—Systems containing only non-condensed rings
- C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
- C07C2601/14—The ring being saturated
Description
UTrrH ΓβΙ tiu KUULUTUSJULKAISU r C ft Ο 3UTrrH ΓβΙ tiu ANNOUNCEMENT r C ft Ο 3
jjBf W <11) UTLÄGGNINGSSKRIFTjjBf W <11) UTLÄGGNINGSSKRIFT
|VvS C ¢45) Patentti oyönnetty 10 J-l 1930| VvS C ¢ 45) Patent granted 10 J-l 1930
Patent neddelat T (51) ic».ik.*/i«w.a.· C 07 C 91/3^ SUOMI —FINLAND (21) PuMnttlhakumu.-IWttweknlng 1389/71 (22) H»k*mi»ptlvl — Ant&knlngsdag 21.05.71 (23) Alkupilvt — Glltlghatsdaf 21.05*71 (41) Tullut luikituksi — Bllvlt offentllg 03.12.71 _ · (44) Nihtlväkllptnon |t kuuL|ulk*l*un pvm. — „ .. „ „„Patent N / A T (51) ic ».ik. * / I« wa · C 07 C 91/3 ^ FINLAND —FINLAND (21) PuMnttlhakumu.-IWttweknlng 1389/71 (22) H »k * mi» ptlvl - Ant & knlngsdag 21.05 .71 (23) Primary Cloud - Glltlghatsdaf 21.05 * 71 (41) Become Stuck - Bllvlt offentllg 03.12.71 _ · (44) - ".." "
Patent· och registerstyrelsen ' Antekin utltgd och utl.ikrHttn publlcerad 31.12. Γ9 (32)(33)(31) Pyydetty etuoikeus —Begird prlorltet 02.06.70Patent · och registerstyrelsen 'Antekin utltgd och utl.ikrHttn published 31.12. Γ9 (32) (33) (31) Privilege claimed —Begird prlorltet 02.06.70
Englanti-England(GB) 26523/70 (71) Allen & Hanburys Limited, Three Colts Lane, Bethnal Green, London, E.2., Englanti-England(GB) (72) Michael Atkinson, London, David Hartley, London, Englanti-England(GB) (7*0 Leitzinger Oy (5*0 Menetelmä fenyyliaminoetanolijohdannaisten valmistamiseksi - Förfarande för framställning av fenylaminoetanolderivat Tämä keksintö koskee menetelmää fenyyliaminoetanolijohdannaisten valmistamiseksi.England-England (GB) 26523/70 (71) Allen & Hanburys Limited, Three Colts Lane, Bethnal Green, London, E.2., England-England (GB) (72) Michael Atkinson, London, David Hartley, London, This invention relates to a process for the preparation of phenylaminoethanol derivatives. This invention relates to a process for the preparation of phenylaminoethanol derivatives.
Olemme havainneet, että rakennekaavan I mukaisia fenyyliaminoetanoli-johdannaisia voidaan valmistaa rakennekaavan II mukaisista yhdisteistä käsittelemällä formaldehydillä vahvan emäksen ja alkalimetallibo-raatin läsnäollessa.We have found that phenylaminoethanol derivatives of structural formula I can be prepared from compounds of structural formula II by treatment with formaldehyde in the presence of a strong base and an alkali metal borate.
Kyseinen keksintö tarjoaa näin ollen menetelmän fenyyliaminoetanoli-johdannaisten valmistamiseksi, joilla on rakennekaava hoch2 HO—ϋ V— CH-CH2-N^ 1 (I) \s—y oh ^ r2The present invention therefore provides a process for the preparation of phenylaminoethanol derivatives having the structural formula hoch2 HO — ϋ V— CH-CH2-N ^ 1 (I) \ s — y oh ^ r2
jossa Rj, tarkoittaa vetyatomia tai bentsyyliryhmää, ja R2 tarkoittaa vetyatomia tai suoraketjuista tai haarautunutta alkyyliradikaalia, jossa on 1 - 6 hiiliatomia, tai aryylialkyyliradikaalia, ja menetelmälle on tunnusomaista, että yhdistettä, jolla on rakennekaava IIwherein R 1 represents a hydrogen atom or a benzyl group, and R 2 represents a hydrogen atom or a straight-chain or branched alkyl radical having 1 to 6 carbon atoms or an arylalkyl radical, and the process is characterized in that the compound of structural formula II
2 56623 _/T\ /Ri ho —v y— ch-ch2-n (II) \-/ OH ^ R2 jossa R^ ja tarkoittavat samaa kuin edellä, käsitellään formaldehydin kanssa tai yhdisteen kanssa, josta syntyy formaldehydiä, vahvan emäksen ja alkalimetalliboraa-tin läsnäollessa, minkä lisäksi tuote haluttaessa debentsyloidaan sinänsä tunnetulla tavalla R^:n merkitessä kaavassa I bentsyyliä tai mikäli myös R^ on bentsyyli myös se muutetaan vedyksi.2 56623 _ / T \ / Ri ho —vy— ch-ch2-n (II) \ - / OH ^ R2 where R ^ and the same as above are treated with formaldehyde or with a compound which forms formaldehyde, a strong base and an alkali metal boron in addition, the product is, if desired, debenzylated in a manner known per se, when R1 in the formula I denotes benzyl or, if R1 is also benzyl, it is also converted to hydrogen.
Alkalimetalliboraatin läsnäolo johtaa yllättäen selektiiviseen monohydroksimetyloin-tiin 2-asemaan, eikä, kuten olisi odotettavissa, hydroksimetylointiin sekä 2- että 6-asemiin.The presence of alkali metal borate surprisingly results in selective monohydroxymethylation at the 2-position and not, as would be expected, hydroxymethylation at both the 2- and 6-positions.
Suoritettaessa reaktiota voidaan käyttää itse formaldehydiä tai jotakin sopivaa yhdistettä, kuten paraformaldehydiä, josta muodostuu formaldhydiä. On edullista käyttää formaldehydin vesiliuosta, esimerkiksi 40-prosenttista formaliinia. Reaktio suoritetaan vahvan emäksen, parhaiten alkalimetallihydroksidin, kuten natriumhydroksi-din, ja alkalimetalliboraatin, erityisesti natriumboraatin läsnäollessa. Reaktio suoritetaan parhaiten ympäristön lämpötilassa vesiliuoksessa.In carrying out the reaction, formaldehyde itself or a suitable compound, such as paraformaldehyde, which forms formaldehyde, may be used. It is preferred to use an aqueous solution of formaldehyde, for example 40% formalin. The reaction is carried out in the presence of a strong base, preferably an alkali metal hydroxide such as sodium hydroxide, and an alkali metal borate, especially sodium borate. The reaction is best performed at ambient temperature in aqueous solution.
Rakennekaavan I mukaisia yhdisteitä kuvataan englantilaisessa ptenttijulkaisussa 1 200 886 välituotteina valmistettaessa rakennekaavan lii mukaisia fenyyliaminoeta-noleja, jotka ovat β-adrenergisiä stimulantteja ja joita voidaan käyttää keuhkoputken laajennuksessa.Compounds of structural formula I are described in British Patent Application 1,200,886 as intermediates in the preparation of phenylaminoethanols of structural formula lii, which are β-adrenergic stimulants and can be used in bronchodilation.
hoch2 v ho —('v j)— ch-ch2-nhr3 (HI)hoch2 v ho - ('v j) - ch-ch2-nhr3 (HI)
\ f OH\ f OH
Tämän englantilaisen patenttijulkaisun mukaan suorittamalla katalyyttinen hydro-genolyysi yhdisteille, joilla on rakennekaava I, jossa R^ - PhCH2 ja R2 - tert.-butyyli tai PhCH2, saadaan yhdisteitä, joilla on rakennekaava III, jossa R^ -tert.-butyyli tai vety, ja alkyloimalla tämän jälkeen pelkistävästi viimeksi mainitut yhdisteet aldehydien tai ketonien kanssa saadaan yhdisteitä, joilla on rakennekaava III, jossa R^ voi omata lukuisia merkityksiä, kuten p-metoksi-a- 56823 metyylifenetyyli.According to this English patent publication, catalytic hydrogenolysis of compounds of structural formula I wherein R 1 - PhCH 2 and R 2 - tert-butyl or PhCH 2 gives compounds of structural formula III wherein R 1 - tert-butyl or hydrogen, and the subsequent reductive alkylation of the latter compounds with aldehydes or ketones gives compounds of structural formula III in which R 1 can have numerous meanings, such as p-methoxy-α-56823 methylphenethyl.
Keksinnön mukaisella menetelmällä on etunaan tunnettuihin menetelmiin näiden yhdisteiden valmistamiseksi (katso esimerkki 16 englantilaisessa patenttijulkaisussa 1 200 886) se, että hydroksimetyyli-ryhmän liittäminen suoritetaan siinä yhdessä vaiheessa.The process of the invention has the advantage over known processes for the preparation of these compounds (see Example 16 in British Patent 1,200,886) that the coupling of the hydroxymethyl group is carried out in that one step.
Seuraavat esimerkit havainnollistavat keksintöä.The following examples illustrate the invention.
Esimerkki 1 1 13 a -(bentsyyli-tert.-butyyliaminometyyli)-4-hydroksi-m-ksyleeni-q ,q - dioli 1,0 g q-(bentsyyli-tert.-butyyliaminometyyli)-4-hydroksi-bentsyylial-koholin hydrokloridia lisättiin liuokseen, jossa oli 0,24 g natrium-hydroksidia 50 ml:ssa vettä ja 20 ml:ssa dioksaania ja sekoitettiin seosta, kunnes saatiin kirkas liuos. Tämän jälkeen lisättiin liuos, jossa oli 2,3 g natriumboraattia 50 ml:ssa vettä ja 5 ml 36-prosent-tista formaldehydiä, ja pidettiin saatua liuosta huoneen lämpötilassa, kunnes kaikki reagoivat aineet olivat reagoineet, mihin kului 7-25 päivää. Tämän jälkeen reaktioseos tehtiin happamaksi lisäämällä 2-normaalista kloorivetyhappoa ja tehtiin sitten emäksiseksi lisäämällä ylimäärin P-prosenttista natriumbikarbonaattia. Tuote uutettiin etyyliasetaattiin, pestiin suolavedellä ja kuivattiin nat-riumsulfaatilla. Väkevöitettäessä saatiin kirkas öljy, mikä kiteytyi hitaasti. Uudelleenkiteytettäessä etyyliasetaatin ja petroli- eetterin (kiehumispiste 60 - 80°C) seoksesta saatiin q^-bentsyyli- 1 3 tert.-butyyliaminometyyli-U-hydroksi-m-ksyleeni-q ,q -diolia (0,35 g; 35 %), jonka sulamispiste oli 118 - 119°C. Yhdisteen sulamispiste ei alentunut, kun se sekoitettiin autenttiseen näytteeseen, joka oli saatu käyttämällä englantilaisen patenttijulkaisun 1 200 886 esimerkissä 16 selostettua menetelmää..Example 1 1 13 a - (Benzyl-tert-butylaminomethyl) -4-hydroxy-m-xylene-q, q-diol 1.0 g of q- (benzyl-tert-butylaminomethyl) -4-hydroxy-benzyl alcohol the hydrochloride was added to a solution of 0.24 g of sodium hydroxide in 50 ml of water and 20 ml of dioxane and the mixture was stirred until a clear solution was obtained. A solution of 2.3 g of sodium borate in 50 ml of water and 5 ml of 36% formaldehyde was then added and the resulting solution was kept at room temperature until all the reactants had reacted, which took 7-25 days. The reaction mixture was then acidified by the addition of 2N hydrochloric acid and then basified by the addition of excess P% sodium bicarbonate. The product was extracted into ethyl acetate, washed with brine and dried over sodium sulfate. Concentration gave a clear oil which slowly crystallized. Recrystallization from a mixture of ethyl acetate and petroleum ether (b.p. 60-80 ° C) gave q-benzyl-1,3-tert-butylaminomethyl-U-hydroxy-m-xylene-q, q-diol (0.35 g; 35%). , having a melting point of 118-119 ° C. The melting point of the compound did not decrease when it was mixed with an authentic sample obtained using the method described in Example 16 of British Patent 1,200,886.
Esimerkki 2 “T—;- 1 3 q -(dibentsyyliaminometyyli)-4-hydroksi-m-ksyleeni-q ,q -dioli 2 ml 1-normaalista natriumhydroksidia ja 15 ml dioksaania lisättiin suspensioon, jossa oli 0,666 g ol·-(dibentsyyliaminometyyli)-4-hydrok-sibentsyyli-alkoholia 15 ml:ssa vettä, ja sekoitettiin seosta, kunnes saatiin kirkas liuos. Tämän jälkeen lisättiin liuos, jossa oli * 56823 0,76 g natriumboraattia 10 ml:ssa vettä ja 5 ml 36-prosenttista formaldehydiä, ja pidettiin saatua liuosta huoneen lämpötilassa, kunnes kaikki reagoivat aineet olivat reagoineet, mihin kului 7 -25 päivää. Reaktioseos tehtiin happamaksi lisäämällä 2-normaalista kloorivetyhappoa ja tehtiin tämän jälkeen emäksiseksi lisäämällä ylimäärin 8-prosenttista natriumbikarbonaattia. Laimennettiin yhtä suurella tilavuudella vettä, suodatettiin pois syntynyt valkoinen saostuma ja ilmakuivattiin se. Aine liuotettiin etyyliasetaattiin, suodatettiin lyhyen piihappopylvään lävitse ja yhdistettiin suodos ja pesuvedet ja kuivattiin natriumsulfaatilla. Väkevöitettäessä liuos saatiin valkeaa kiinteää ainetta, joka kiteytettiin etyyliasetaatin ja sykloheksäänin seoksesta, jolloin saatiin 0,3 g o^-dibent-syyliaminometyyli-4-hydroksi-m-ksyleeni-a ,a -diolia, jonka sulamispiste oli 108 - 110°C. Yhdisteen tämä sulamispiste ei alentunut, kun siihen sekoitettiin englantilaisen patenttijulkaisun 1 200 886 esimerkin 33 mukaan valmistettua yhdistettä. Saatu yhdiste voidaan sitten debentsyloida englantilaisen patenttijulkaisun 1 200 886 esimerkissä 21 kuvatulla menetelmällä, jolloin saadaan o^-amino-metyy-li-4-hydroksi-m-ksyleeni-a,a -diolia (R-^=R2=H). Tämä yhdiste voidaan sitten pelkistävästä alkyloida mainitun englantilaisen patenttijulkaisun esimerkeissä 28, 29, 30, 31 ja 32 kuvatulla menetelmällä.Example 2 “T -; - 1 3 q- (dibenzylaminomethyl) -4-hydroxy-m-xylene-q, q-diol 2 ml of 1N sodium hydroxide and 15 ml of dioxane were added to a suspension of 0.666 g of ol · - (dibenzylaminomethyl). ) -4-hydroxybenzyl alcohol in 15 ml of water, and the mixture was stirred until a clear solution was obtained. A solution of * 56823 0.76 g of sodium borate in 10 ml of water and 5 ml of 36% formaldehyde was then added and the resulting solution was kept at room temperature until all the reactants had reacted, which took 7 to 25 days. The reaction mixture was acidified by the addition of 2N hydrochloric acid and then basified by the addition of an excess of 8% sodium bicarbonate. Dilute with an equal volume of water, filter off the resulting white precipitate and air dry it. The material was dissolved in ethyl acetate, filtered through a short column of silica and the filtrate and washings were combined and dried over sodium sulfate. Concentration of the solution gave a white solid which was crystallized from a mixture of ethyl acetate and cyclohexane to give 0.3 g of α, β-dibenzylaminomethyl-4-hydroxy-m-xylene-α, α-diol, m.p. 108-110 ° C. This melting point of the compound did not decrease when the compound prepared according to Example 33 of British Patent 1,200,886 was mixed with it. The resulting compound can then be debenzylated by the method described in Example 21 of British Patent 1,200,886 to give? -Aminomethyl-4-hydroxy-m-xylene-α, α-diol (R 1 = R 2 = H). This compound can then be reductively alkylated by the method described in Examples 28, 29, 30, 31 and 32 of said English Patent Publication.
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2652370 | 1970-06-02 | ||
GB26523/70A GB1298284A (en) | 1970-06-02 | 1970-06-02 | Preparation of phenylaminoethanols |
Publications (2)
Publication Number | Publication Date |
---|---|
FI56823B FI56823B (en) | 1979-12-31 |
FI56823C true FI56823C (en) | 1980-04-10 |
Family
ID=10244972
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI1389/71A FI56823C (en) | 1970-06-02 | 1971-05-21 | FOERFARANDE FOER FRAMSTAELLNING AV FENYLAMINOETANOLDERIVAT |
Country Status (14)
Country | Link |
---|---|
JP (1) | JPS5216102B1 (en) |
AT (1) | AT308724B (en) |
CA (1) | CA989418A (en) |
CH (1) | CH558329A (en) |
DE (1) | DE2127177C3 (en) |
DK (1) | DK125388B (en) |
ES (1) | ES391800A1 (en) |
FI (1) | FI56823C (en) |
GB (1) | GB1298284A (en) |
IL (1) | IL36836A (en) |
NL (1) | NL174040C (en) |
NO (1) | NO130312B (en) |
SE (1) | SE376764B (en) |
YU (1) | YU34979B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51118737A (en) * | 1975-04-10 | 1976-10-18 | Shionogi & Co Ltd | Novel process for preparation of monosubstituted aminobenzylalcohols a t o-n position |
US4952729A (en) * | 1986-09-05 | 1990-08-28 | Schering-Plough Corp. | Intermediates in the preparation of alpha1(((1,1-dimethylethyl) amino) methyl)-4-hydroxy-1,3-benzenedimethanol |
EP0259159A3 (en) * | 1986-09-05 | 1989-08-09 | Schering Corporation | Method for the preparation of alpha1- [[(1,1-Dimethylethyl) amino] methyl]-4-hydroxy-1,3-benzenedimethanol, and intermediates used in its preparation |
-
1970
- 1970-06-02 GB GB26523/70A patent/GB1298284A/en not_active Expired
-
1971
- 1971-05-11 CA CA112,656A patent/CA989418A/en not_active Expired
- 1971-05-12 IL IL36836A patent/IL36836A/en unknown
- 1971-05-20 YU YU1271/71A patent/YU34979B/en unknown
- 1971-05-21 FI FI1389/71A patent/FI56823C/en active
- 1971-05-26 JP JP46035603A patent/JPS5216102B1/ja active Pending
- 1971-05-28 AT AT464071A patent/AT308724B/en not_active IP Right Cessation
- 1971-05-31 ES ES391800A patent/ES391800A1/en not_active Expired
- 1971-06-01 DK DK264671AA patent/DK125388B/en unknown
- 1971-06-01 NO NO02049/71*[A patent/NO130312B/no unknown
- 1971-06-01 DE DE2127177A patent/DE2127177C3/en not_active Expired
- 1971-06-02 SE SE7107128A patent/SE376764B/xx unknown
- 1971-06-02 CH CH798871A patent/CH558329A/en not_active IP Right Cessation
- 1971-06-02 NL NLAANVRAGE7107588,A patent/NL174040C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
GB1298284A (en) | 1972-11-29 |
IL36836A0 (en) | 1971-07-28 |
NL174040B (en) | 1983-11-16 |
DE2127177B2 (en) | 1980-05-22 |
YU34979B (en) | 1980-06-30 |
JPS5216102B1 (en) | 1977-05-06 |
NL7107588A (en) | 1971-12-06 |
NL174040C (en) | 1984-04-16 |
SE376764B (en) | 1975-06-09 |
YU127171A (en) | 1979-12-31 |
DK125388B (en) | 1973-02-12 |
AT308724B (en) | 1973-07-25 |
CA989418A (en) | 1976-05-18 |
DE2127177C3 (en) | 1981-01-29 |
DE2127177A1 (en) | 1971-12-09 |
CH558329A (en) | 1975-01-31 |
ES391800A1 (en) | 1974-11-01 |
IL36836A (en) | 1973-07-30 |
FI56823B (en) | 1979-12-31 |
NO130312B (en) | 1974-08-12 |
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