JPH0511114B2 - - Google Patents

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Publication number
JPH0511114B2
JPH0511114B2 JP18696385A JP18696385A JPH0511114B2 JP H0511114 B2 JPH0511114 B2 JP H0511114B2 JP 18696385 A JP18696385 A JP 18696385A JP 18696385 A JP18696385 A JP 18696385A JP H0511114 B2 JPH0511114 B2 JP H0511114B2
Authority
JP
Japan
Prior art keywords
formula
methoxy
water
mmol
add
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP18696385A
Other languages
Japanese (ja)
Other versions
JPS6248678A (en
Inventor
Yoshimi Morita
Sunao Imaki
Hisao Takayanagi
Tadashi Shirasaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Chemical America Inc
Original Assignee
Mitsubishi Chemical America Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Chemical America Inc filed Critical Mitsubishi Chemical America Inc
Priority to JP60186963A priority Critical patent/JPS6248678A/en
Priority to HU863589A priority patent/HUT44774A/en
Priority to US06/896,961 priority patent/US4769480A/en
Priority to EP19900402393 priority patent/EP0404694A3/en
Priority to EP19900401305 priority patent/EP0387156A3/en
Priority to EP86401866A priority patent/EP0214051A3/en
Priority to KR1019860007130A priority patent/KR900000967B1/en
Priority to CA000516840A priority patent/CA1309720C/en
Publication of JPS6248678A publication Critical patent/JPS6248678A/en
Publication of JPH0511114B2 publication Critical patent/JPH0511114B2/ja
Granted legal-status Critical Current

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Description

【発明の詳細な説明】[Detailed description of the invention]

〔産業上の利用分野〕 本発明は、抗アレルギー等の作用を有し、医薬
として有用なトリトクワリン製造(特開昭59−
44374号および同59−44382号公報)の主要原料で
あるコタルニンの合成中間体として有用な新規な
ベンジルアミン誘導体に関する。 〔従来の技術〕 従来、コタルニンは、天然アルカロイドである
ノスカピンの酸化により製造されている〔薬学雑
誌、50、559(1930)〕。 しかし、ノスカピンは天然品からの生成物であ
り、量的に限界があり、安定供給が困難という欠
点がある。 〔問題点を解決するための手段〕 そこで、本発明者らは、上記実情に鑑み鋭意検
討した結果、本発明のベンジルアミン誘導体をコ
タルニン製造中間体に用いると、工業的有利にコ
タルニンを製造することができることを見い出
し、本発明に到達した。 すなわち、本発明の要旨は、下記の一般式
(): 〔式中、R1は水素原子またはメチル基を表わし、
Xは水素原子、メチル基またはトシル基を表わ
し、Yは水素原子、メチル基または
[Industrial Application Field] The present invention relates to the production of tritoqualin, which has antiallergic effects and is useful as a medicine (Japanese Patent Application Laid-open No.
44374 and 59-44382), which are useful as synthetic intermediates for cotarunine, which is the main raw material of Japanese Patent Publications No. 44374 and No. 59-44382). [Prior Art] Conventionally, cotalnin has been produced by oxidizing noscapine, a natural alkaloid [Pharmaceutical Journal, 50 , 559 (1930)]. However, noscapine is a natural product and has the disadvantage of being limited in quantity and difficult to provide stably. [Means for Solving the Problems] Therefore, as a result of intensive studies in view of the above-mentioned circumstances, the present inventors have found that when the benzylamine derivative of the present invention is used as an intermediate for producing cotarunine, it is possible to produce cotarunine industrially advantageously. We have discovered that it is possible to do this, and have arrived at the present invention. That is, the gist of the present invention is the following general formula (): [In the formula, R 1 represents a hydrogen atom or a methyl group,
X represents a hydrogen atom, methyl group or tosyl group, Y represents a hydrogen atom, methyl group or

〔実施例〕〔Example〕

以下、本発明を実施例により更に具体的に説明
するが、本発明は、その要旨を超えない限り以下
の実施例に限定されない。 実施例 1 酸化白金1.0gをエタノール100mlに加え、撹拌
しながら水素を30分間通す。これに2−メトキシ
−3,4−メチレンジオキシベンズアルデヒド(1)
54.06g0.3モル)とアミノアセトアルエデヒドジ
エチルアセタール(純度98%)40.78g(0.3モ
ル)のエタノール100mlの溶液を加え撹拌しなが
ら室温下、8.5時間水添を行なう。触媒を去し、
溶媒を減圧留去すると、N−(2−メトキシ−3,
4−メチレンジオキシベンジル)アミノアセトア
ルデヒドジエチルアセタール(2)が89.43g(収率
100%)、オイルとして得られた。 IR(neat、νmaxcm-1):1630、1495、1465、12551 H−NMR(60MHz in CDCl3、δppm): 1.18(6H、t、J=7Hz、−OCH2C 3×2) 1.88(1H、s、−N) 2.68(2H、d、J=6Hz、NC 2CH(OEt)2) 3.3−3.9(4H、m、−OC 2CH3×2) 3.70(2H、s、ArC 2N) 3.99(3H、s、OC 3) 4.58(1H、t、J=6Hz、NCH2C(OEt)2) 5.87(2H、s、
EXAMPLES Hereinafter, the present invention will be explained in more detail with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist thereof. Example 1 Add 1.0 g of platinum oxide to 100 ml of ethanol, and pass hydrogen through it for 30 minutes while stirring. To this, 2-methoxy-3,4-methylenedioxybenzaldehyde (1)
A solution of 54.06 g (0.3 mol) and 40.78 g (0.3 mol) of aminoacetaledehyde diethyl acetal (purity 98%) in 100 ml of ethanol was added and hydrogenated at room temperature for 8.5 hours with stirring. remove the catalyst,
When the solvent was distilled off under reduced pressure, N-(2-methoxy-3,
89.43g of 4-methylenedioxybenzyl)aminoacetaldehyde diethyl acetal (2) (yield
100%), obtained as an oil. IR (neat, νmaxcm -1 ): 1630, 1495, 1465, 1255 1 H-NMR (60MHz in CDCl 3 , δppm): 1.18 (6H, t, J = 7Hz, -OCH 2 C H 3 ×2) 1.88 ( 1H, s, -NH ) 2.68 (2H, d, J = 6Hz, NC H 2 CH (OEt) 2 ) 3.3-3.9 (4H, m, -OC H 2 CH 3 ×2) 3.70 (2H, s, ArC H 2 N) 3.99 (3H, s, OC H 3 ) 4.58 (1H, t, J=6Hz, NCH 2 C H (OEt) 2 ) 5.87 (2H, s,

【式】) 実施例 2 酸化白金200mgをエタノール15ml、酢酸2mlの
溶液に加え水素を30分間、撹拌しながら通す。こ
れに、N−(2−メトキシ−3,4−メチレンジ
オキシベンジル)アミノアセトアルデヒドジエチ
ルアセタール(1)5.95g(20ミリモル)と35%ホル
マリン1.89g(22ミリモル)を加え、撹拌しなが
ら、室温で1時間45分間水添を行なう。触媒を
去し、溶液を減圧濃縮し、残つたオイルに塩化メ
チレン30ml、水15mlを加え、25%水酸化ナトリウ
ム水溶液を徐々に加え水層を塩基性とする。分液
し、塩化メチレン層を15mlの水で洗い無水硫酸マ
グネシウムで乾燥する。これを過し、減圧濃縮
するとN−(2−メトキシ−3,4−メチレンジ
オキシベンジル)−N−メチルアミノアセトアル
デヒドジエチルアセタール(2)がオイルとして6.15
g(収率99%)得られた。 IR(neat、νmaxcm-1):1470、1260、10701 H−NMR(60MHz in CDCl3、δppm): 1.19(6H、t、J=7Hz、OCH2C 3×2) 2.26(3H、s、NC 3) 2.58(2H、d、J=5Hz、NC 2CH(OEt)2) 3.3−3.9(4H、m、OC 2CH3×2) 3.52(2H、s、ArC 2N) 3.96(3H、s、OC 3) 4.63(1H、t、J=5Hz、−NCH2C(OEt)2) 5.89(2H、s、
【formula】) Example 2 Add 200 mg of platinum oxide to a solution of 15 ml of ethanol and 2 ml of acetic acid, and pass hydrogen through the solution for 30 minutes while stirring. To this were added 5.95 g (20 mmol) of N-(2-methoxy-3,4-methylenedioxybenzyl)aminoacetaldehyde diethyl acetal (1) and 1.89 g (22 mmol) of 35% formalin, and the mixture was heated at room temperature while stirring. Hydrogenation was carried out for 1 hour and 45 minutes. Remove the catalyst, concentrate the solution under reduced pressure, add 30 ml of methylene chloride and 15 ml of water to the remaining oil, and make the aqueous layer basic by gradually adding 25% aqueous sodium hydroxide solution. Separate the layers, wash the methylene chloride layer with 15 ml of water, and dry over anhydrous magnesium sulfate. When this is filtered and concentrated under reduced pressure, 6.15% of N-(2-methoxy-3,4-methylenedioxybenzyl)-N-methylaminoacetaldehyde diethyl acetal (2) is obtained as an oil.
g (yield 99%) was obtained. IR (neat, νmaxcm -1 ): 1470, 1260, 1070 1 H-NMR (60MHz in CDCl 3 , δppm): 1.19 (6H, t, J = 7Hz, OCH 2 C H 3 ×2) 2.26 (3H, s , NC H 3 ) 2.58 (2H, d, J=5Hz, NC H 2 CH (OEt) 2 ) 3.3−3.9 (4H, m, OC H 2 CH 3 ×2) 3.52 (2H, s, ArC H 2 N ) 3.96 (3H, s, OC H 3 ) 4.63 (1H, t, J=5Hz, -NCH 2 CH (OEt) 2 ) 5.89 (2H, s,

【式】【formula】

実施例 3 酸化白金0.2gをメタノール20mlに加え、水素
を通じて活性化する。これに、2−メトキシ−
3,4−メチレンジオキシベンズアルデヒド(1)
10.81g(60ミリモル)と純度99%のアミノアセ
トアルデヒドジメチルアセタール6.37g(60ミリ
モル)のメタノール20ml溶液を加え、3.5時間水
添を行なう。ついで35%ホルマリン5.24ml(66ミ
リモル)を加え、9時間水添を行なう。触媒を
去し、液を減圧濃縮すると、N−(2−メトキ
シ−3,4−メチレンジオキベンジル)−N−メ
チルアミノアセトアルデヒドジメチルアセタール
(3)16.85gがオイルとして得られた。収率99% IR(neat,νmaxcm-1):1475、1265、1070、10501 H−NMR(60MHz in CDCl3,δppm): 2.26(3H、s、NC 3) 2.55(2H、d、j=5Hz、NC 2CH(OCH32) 3.31(6H、s、CH2CH(OC 32) 3.49(2H、s、ArC 2) 3.96(3H、s、ArOC 3) 4.51(1H、t、J=5Hz、NCH2C(CH32) 5.85(2H、s、
Example 3 Add 0.2 g of platinum oxide to 20 ml of methanol and activate by passing hydrogen. To this, 2-methoxy-
3,4-methylenedioxybenzaldehyde (1)
A 20 ml methanol solution of 10.81 g (60 mmol) and 6.37 g (60 mmol) of aminoacetaldehyde dimethyl acetal with a purity of 99% is added, and hydrogenation is carried out for 3.5 hours. Then, 5.24 ml (66 mmol) of 35% formalin was added and hydrogenation was carried out for 9 hours. After removing the catalyst and concentrating the liquid under reduced pressure, N-(2-methoxy-3,4-methylenediokibenzyl)-N-methylaminoacetaldehyde dimethyl acetal was obtained.
(3) 16.85g was obtained as oil. Yield 99% IR (neat, νmaxcm -1 ): 1475, 1265, 1070, 1050 1 H-NMR (60MHz in CDCl 3 , δppm): 2.26 (3H, s, NC H 3 ) 2.55 (2H, d, j =5Hz, NC H 2 CH (OCH 3 ) 2 ) 3.31 (6H, s, CH 2 CH ( OCH 3 ) 2 ) 3.49 (2H, s, ArC H 2 ) 3.96 (3H, s, ArOC H 3 ) 4.51 (1H, t, J=5Hz, NCH 2 C H (CH 3 ) 2 ) 5.85 (2H, s,

【式】) 実施例 4 N−(2−メトキシ−3,4−メチレンジオキ
シベンジル)アミノアセトアルデヒドジエチルア
セタール(1)59.46g(0.2モル)、トリエチルアミ
ン28.45ml(0.204モル)を塩化メチレン100mlに
溶解し、これに15〜30℃でp−トルエンスルホニ
ルクロリド38.88g(0.204モル)の塩化メチレン
80mlの溶液を25分間で滴下する。室温で30分間撹
拌後、水150mlを加えて撹拌後分液し、さらに100
mlの水で洗う。塩化メチレン層を無水硫酸マグネ
シウムで乾燥した後、溶媒を減圧留去すると、
90.3gのN−(2−メトキシ−3,4−メチレン
ジオキシベンジル)−N−(p−トルエンスルホニ
ル)アミノアセトアルデヒドジエチルアセタール
(2)をオイルとして得た。収率100% IR(neat、νmaxcm-1):1470、1340、1265、
1160、1070、1 H−NMR(60MHz in CDCl3、δppm): 1.13(6H,t,J=7Hz、OCH2C 3×2) 2.40(3H、s、
【formula】) Example 4 Dissolve 59.46 g (0.2 mol) of N-(2-methoxy-3,4-methylenedioxybenzyl)aminoacetaldehyde diethyl acetal (1) and 28.45 ml (0.204 mol) of triethylamine in 100 ml of methylene chloride, and add 15 to 30% of p-Toluenesulfonyl chloride 38.88 g (0.204 mol) methylene chloride at °C
Add 80 ml of solution dropwise over 25 minutes. After stirring at room temperature for 30 minutes, add 150 ml of water, stir, separate the liquids, and add 100 ml of water.
Wash with ml of water. After drying the methylene chloride layer with anhydrous magnesium sulfate, the solvent was distilled off under reduced pressure.
90.3 g of N-(2-methoxy-3,4-methylenedioxybenzyl)-N-(p-toluenesulfonyl)aminoacetaldehyde diethylacetal
(2) was obtained as an oil. Yield 100% IR (neat, νmaxcm -1 ): 1470, 1340, 1265,
1160, 1070, 1 H-NMR (60MHz in CDCl 3 , δppm): 1.13 (6H, t, J = 7Hz, OCH 2 CH 3 ×2) 2.40 (3H, s,

【式】) 3.2−3.8(6H、m、OC 2CH3×2 NC 2CH(OEt)2 3.82(3H、s、−OC 3) 4.43(2H、s、ArC 2N) 4.58(1H、t、J=5Hz、NCH2C(OEt)2) 5.83(2H、s、[Formula]) 3.2−3.8 (6H, m, OC H 2 CH 3 ×2 NC H 2 CH (OEt) 2 3.82 (3H, s, -OC H 3 ) 4.43 (2H, s, ArC H 2 N) 4.58 (1H, t, J=5Hz, NCH 2 C H (OEt) 2 ) 5.83 (2H, s,

【式】) 7.58(2H、d、J=8Hz、
【formula】) 7.58 (2H, d, J=8Hz,

【式】) 実施例 5 2−メトキシ−3,4−メチレンジオキシベン
ズアルデヒド(1)9.01g(50ミリモル)をピリジン
40mlに溶解し、これにヒドロキシルアミン塩酸塩
6.95g(100ミリモル)を加え、100℃に45分間加
熱する。冷却後、水300mlを加え、30分間撹拌し、
析出結晶を取し、水で洗う。これを減圧で乾燥
すると9.27gの2−メトキシ−3,4−メチレン
ジオキシベンズアルドキシム(2)を得た。収率95
%、mp.118−9℃ IR(KBr、νmaxcm-1):3220、1475、1270、
1060、9501 H−NMR(60MHz in CDCl3、δppm): 4.00(3H、s、OC 3) 5.93(2H、s、
[Formula]) Example 5 9.01 g (50 mmol) of 2-methoxy-3,4-methylenedioxybenzaldehyde (1) was added to pyridine.
Dissolve hydroxylamine hydrochloride in 40ml
Add 6.95 g (100 mmol) and heat to 100°C for 45 minutes. After cooling, add 300ml of water and stir for 30 minutes.
Take out the precipitated crystals and wash with water. This was dried under reduced pressure to obtain 9.27 g of 2-methoxy-3,4-methylenedioxybenzaldoxime (2). Yield 95
%, mp.118-9℃ IR (KBr, νmaxcm -1 ): 3220, 1475, 1270,
1060, 950 1 H-NMR (60MHz in CDCl 3 , δppm): 4.00 (3H, s, OC H 3 ) 5.93 (2H, s,

【式】) 8.30(1H、s、C=NOH) 9.00(1H、s、=NO) 得られた2−メトキシ−3,4−メチレンジオ
キシベンズアルドキシム(2)7.81g(40ミリモル)、
濃塩酸3.67ml(44ミリモル)、5%パラジウム−
カーボン500mgをエタノール80mlに加え、室温下、
4時間45分間水添する。触媒を去し、液を濃
縮し、残渣をエタノール60mlより再結晶すると、
4.86gの2−メトキシ−3,4−メチレンジオキ
シベンジルアミン塩酸塩を得た。収率56%、
mp.208−210℃ IR(KBr、νmaxcm-1):2920、1505、1470、
1270、10751 H−NMR(60MHz in DMSO−d6、δppm): 3.87(2H、s、ArC 2N) 4.00(3H、s、OC 3) 6.03(2H,s,
【formula】) 8.30 (1H, s, CH = NOH) 9.00 (1H, s, = NOH ) 7.81 g (40 mmol) of the obtained 2-methoxy-3,4-methylenedioxybenzaldoxime (2),
3.67 ml (44 mmol) of concentrated hydrochloric acid, 5% palladium
Add 500mg of carbon to 80ml of ethanol and add at room temperature.
Hydrogenate for 4 hours and 45 minutes. The catalyst was removed, the liquid was concentrated, and the residue was recrystallized from 60 ml of ethanol.
4.86 g of 2-methoxy-3,4-methylenedioxybenzylamine hydrochloride was obtained. Yield 56%,
mp.208−210℃ IR (KBr, νmaxcm -1 ): 2920, 1505, 1470,
1270, 1075 1 H-NMR (60MHz in DMSO-d 6 , δppm): 3.87 (2H, s, ArC H 2 N) 4.00 (3H, s, OC H 3 ) 6.03 (2H, s,

【式】) 8.42(3H、broad S、ArCH2+ 3) 実施例 6 2−メトキシ−3,4−メチレンジオキシベン
ジルアミン塩酸塩(1)2.18g(10ミリモル)とトリ
エチルアミン3.06ml(22ミリモル)を塩化メチレ
ン30mlに加える。これに、水冷下、p−トルエン
スルホニルクロリド、1.91g(10ミリモル)を少
しずつ加えた後、室温下1時間撹拌する。水20ml
を加えて分液し、塩化メチレン層を水15mlで洗
い、無水硫酸マグネシウムで乾燥後過し、溶媒
を減圧留去する。残渣にn−ヘキサン30mlを加え
て30分間撹拌後、結晶を取し、n−ヘキサンで
洗い乾燥すると3.25gのN−(2−メトキシ−3,
4−メチレンジオキシベンジル)−p−トルエン
スルホンアミド(2)を得た(収率97%)。これを酢
酸エチルから再結晶した。mp.150−1℃。 IR(KBr、νmaxcm-1):3180、1470、1265、
1165、1080、10501 H−NMR(60MHz in CDCl3、δppm): 2.24(3H、s、
【formula】) 8.42 (3H, broad S, ArCH 2+ NH 3 ) Example 6 2.18 g (10 mmol) of 2-methoxy-3,4-methylenedioxybenzylamine hydrochloride (1) and 3.06 ml (22 mmol) of triethylamine are added to 30 ml of methylene chloride. To this, 1.91 g (10 mmol) of p-toluenesulfonyl chloride was added little by little under water cooling, and the mixture was stirred at room temperature for 1 hour. 20ml water
The methylene chloride layer was washed with 15 ml of water, dried over anhydrous magnesium sulfate, filtered, and the solvent was distilled off under reduced pressure. After adding 30 ml of n-hexane to the residue and stirring for 30 minutes, the crystals were collected, washed with n-hexane and dried to give 3.25 g of N-(2-methoxy-3,
4-methylenedioxybenzyl)-p-toluenesulfonamide (2) was obtained (yield 97%). This was recrystallized from ethyl acetate. mp.150−1℃. IR (KBr, νmaxcm -1 ): 3180, 1470, 1265,
1165, 1080, 1050 1 H-NMR (60MHz in CDCl 3 , δppm): 2.24 (3H, s,

【式】) 3.91(3H、s、OC 3) 4.05(2H、d、J=6Hz、ArC 2NH)、5.00
(1H、t、J=6Hz、ArC 2N、5.83(2H、
s、
[Formula]) 3.91 (3H, s, OC H 3 ) 4.05 (2H, d, J=6Hz, ArC H 2 NH), 5.00
(1H, t, J = 6Hz, ArC H 2 N H , 5.83 (2H,
s,

【式】) 7.02(2H、d、J=8Hz、
【formula】) 7.02 (2H, d, J=8Hz,

【式】) 7.6−(2H、d、J=8Hz、
[Formula]) 7.6−(2H, d, J=8Hz,

【式】) 実施例 7 酸化白金0.2gをエタノール10mlに加え、水素
を30分間撹拌しながら通す。これに2−メトキシ
−3,4−メチレンジオキシベンズアルデヒド
5.41g(30ミリモル)と40%メチルアミン水溶液
2.56g(33ミリモル)のエタノール15mlの溶液を
加え、3時間接触還元を行なう。触媒を去し、
液を減圧濃縮するとN−メチル−2−メトキシ
−3,4−メチレンジオキシベンジルアミン(2)
5.82gがオイルとして得られた(収率99%)。 IR(neat、νmaxcm-1):1630、1470、1260、
1070、1045 、1H−NMR(60MHz in CDCl3、δppm): 1.44(1H、s、N) 2.37(3H、s、NC 3)、3.63(2H、s、ArC
2N) 3.98(3H、s、−OC 3)、5.87(2H、s、
[Formula]) Example 7 Add 0.2 g of platinum oxide to 10 ml of ethanol and pass hydrogen through with stirring for 30 minutes. To this, 2-methoxy-3,4-methylenedioxybenzaldehyde
5.41g (30mmol) and 40% methylamine aqueous solution
A solution of 2.56 g (33 mmol) in 15 ml of ethanol is added and catalytic reduction is carried out for 3 hours. remove the catalyst,
When the liquid is concentrated under reduced pressure, N-methyl-2-methoxy-3,4-methylenedioxybenzylamine (2)
5.82 g was obtained as an oil (99% yield). IR (neat, νmaxcm -1 ): 1630, 1470, 1260,
1070, 1045, 1H -NMR (60MHz in CDCl3 , δppm): 1.44 (1H , s, NH ) 2.37 (3H, s, NC H3 ), 3.63 (2H, s, ArC H
2 N) 3.98 (3H, s, -OC H 3 ), 5.87 (2H, s,

【式】) 参考例 1 実施例2で得られたN−(2−メトキシ−3,
4−メチレンジオキシベンジル)−N−メチルア
ミノアセトアルデヒドジエチルアセタール(1)
62.29g(0.2モル)を6N硫酸400mlに溶解し76〜
78℃に1.5時間加熱撹拌する。これを冷却し、30
℃以下で25%水酸化ナトリウム水溶液を加えてPH
を約11とする。塩化メチレン200ml、100mlで順次
抽出し、これを合わせて水100mlで洗い、無水硫
酸マグネシウムで乾燥する。塩を去し、液を
減圧濃縮し、残渣にエタノール120mlを加えて加
熱溶解し、5℃に冷却すると結晶が析出する。こ
れを取し、冷エタノール30mlで洗い、減圧乾燥
して38.09g(収率80.3%)の4−ヒドロキシ−
8−メトキシ−2−メチル−6,7−メチレンジ
オキシ−1,2,3,4−テトラヒドロイソキノ
リン(2)を得た。mp.152−3℃ IR(KBr,νmaxcm-1):1480、1460、1265、
1095、10451 H−NMR(60MHz in CDCl3、δppm): 2.38(3H、s、NC 3 3.97(3H、s、OC 3) 4.42(1H、broad S、
【formula】) Reference example 1 N-(2-methoxy-3,
4-Methylenedioxybenzyl)-N-methylaminoacetaldehyde diethyl acetal (1)
Dissolve 62.29g (0.2mol) in 400ml of 6N sulfuric acid and make 76~
Heat and stir at 78°C for 1.5 hours. Cool this and 30
PH by adding 25% sodium hydroxide aqueous solution below ℃
is approximately 11. Extract sequentially with 200 ml and 100 ml of methylene chloride, wash together with 100 ml of water, and dry over anhydrous magnesium sulfate. The salt was removed, the liquid was concentrated under reduced pressure, 120 ml of ethanol was added to the residue, the solution was heated and dissolved, and upon cooling to 5°C, crystals were precipitated. This was taken, washed with 30 ml of cold ethanol, and dried under reduced pressure to give 38.09 g (yield 80.3%) of 4-hydroxy-
8-methoxy-2-methyl-6,7-methylenedioxy-1,2,3,4-tetrahydroisoquinoline (2) was obtained. mp.152−3℃ IR (KBr, νmaxcm -1 ): 1480, 1460, 1265,
1095, 1045 1 H-NMR (60MHz in CDCl 3 , δppm): 2.38 (3H, s, NC H 3 ) 3.97 (3H, s, OC H 3 ) 4.42 (1H, broad S,

【式】) 5.85(2H、s、【formula】) 5.85 (2H, s,

【式】) 6.56(1H、s、【formula】) 6.56 (1H, s,

【式】) 参考例 2 実施例3で得られたN−(2−メトキシ−3,
4−メチレンジオキシベンジル)−N−メチルア
ミノアセトアルデヒドジメチルアセタール(1)5.67
g(20ミリモル)を6N硫酸40mlに溶解し、76〜
7℃に1.5時間加熱撹拌する。これを冷却し、30
℃以下で25%水酸化ナトリウム水溶液を加えてPH
を約11とする。塩化メチレン35ml、10mlで抽出
し、これを合わせ水20mlで洗い無水硫酸マグネシ
ウムで乾燥する。溶媒を減圧留去し、残渣にエタ
ノール12mlを加えて加熱溶解し、5℃に冷却する
と結晶が析出する。これを取し、冷エタノール
3mlで洗い減圧乾燥して3.71gの4−ヒドロキシ
−8−メトキシ−2−メチル−6,7−メチレン
ジオキシ−1,2,3,4−テトラヒドロイソキ
ノリン(2)を得た。収率78% mp.152−3℃ 参考例 3 参考例1または2で得られた4−ヒドロキシ−
8−メトキシ−2−メチル−6,7−メチレンジ
オキシ−1,2,3,4−テトラヒドロイソキノ
リン(1)1.19g(5ミリモル)を酢酸15mlに溶解
し、これに97%硫酸0.33ml(6ミリモル)、5%
パラジウムカーボン500mgを加え75℃で2時間接
触還元を行なう。触媒を去し、25%水酸化ナト
リウム水2mlと水5mlを加え減圧濃縮する。残渣
に水10mlを加え氷冷下25%水酸化ナトリウム水で
塩基性とし、塩化メチレン10ml、5mlで順次抽出
する。抽出液を水5mlで洗い、無水硫酸マグネシ
ウムで乾燥後、減圧濃縮すると1.03gの8−メト
キシ−2−メチル−6,7−メチレンジオキシ−
1,2,3,4−テトラヒドロイソキノリンが得
られた。収率93% 参考例 4 参考例3で得られた8−メトキシ−2−メチル
−6,7−メチレンジオキシ−1,2,3,4−
テトラヒドロイソキノリン(1)221mg(1ミリモ
ル)、酢酸カリウム108mg(1.1ミリモル)をエタ
ノール2mlに溶解し、これを約75℃に加熱しなが
ら、ヨウ素254mg(1ミリモル)のエタノール2.4
ml溶液を85分間かかつて滴下する。75℃で100分
間加熱後、エタノールを減圧留去し、残渣に水6
mlを加え、氷冷下、25%水酸化ナトリウム水溶液
0.6mlを加える。室温で30分間撹拌後結晶を取
し、水0.6mlで2回洗い乾燥すると217mgのコタル
ニンが得られた。収率91% 実施例 8 2,3−メチレンジオキシフエノール(1)690mg
(5mmol)のトルエン溶液(5ml)に、メチル
アミノセトアルデヒドジメチルアセタール(純度
98%)0.51ml(4mmol)、さらにパラホルムア
ルデヒド150mg(5mmol)を加える。この混合
物を、撹拌しながら90℃の浴に浸し30分間加熱反
応させる。トルエンを留去後、残渣をシリカゲル
カラムクロマトグラフイーにて分離精製(展開液
=n−ヘキサン/酢酸エチル=2/1)するとN
−(2−ヒドロキシ−3,4−メチレンジオキシ
ベンジル)−N−メチルアミノアセトアルデヒド
ジメチルアセタール(2)890mg(収率、80%)が得
られた。 IR(neat、νmaxcm-1):1645、1485、1370、10601 H−NMR(60MHz in CDCl3、δppm): 2.27(3H、s、NC 3) 2.61(2H、z、J=5.5Hz、NC 2CH(OMe)2) 3.30(6H、s、OC 3×2) 3.6(2H、s、
[Formula]) Reference example 2 N-(2-methoxy-3,
4-Methylenedioxybenzyl)-N-methylaminoacetaldehyde dimethyl acetal (1)5.67
Dissolve g (20 mmol) in 40 ml of 6N sulfuric acid, 76 ~
Heat and stir at 7°C for 1.5 hours. Cool this and 30
PH by adding 25% sodium hydroxide aqueous solution below ℃
is approximately 11. Extract with 35 ml and 10 ml of methylene chloride, combine, wash with 20 ml of water, and dry over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure, 12 ml of ethanol was added to the residue, and the mixture was dissolved by heating. When the mixture was cooled to 5° C., crystals were precipitated. This was washed with 3 ml of cold ethanol and dried under reduced pressure to produce 3.71 g of 4-hydroxy-8-methoxy-2-methyl-6,7-methylenedioxy-1,2,3,4-tetrahydroisoquinoline (2). I got it. Yield 78% mp.152-3℃ Reference example 3 4-Hydroxy- obtained in Reference Example 1 or 2
1.19 g (5 mmol) of 8-methoxy-2-methyl-6,7-methylenedioxy-1,2,3,4-tetrahydroisoquinoline (1) was dissolved in 15 ml of acetic acid, and 0.33 ml of 97% sulfuric acid ( 6 mmol), 5%
Add 500 mg of palladium on carbon and perform catalytic reduction at 75°C for 2 hours. Remove the catalyst, add 2 ml of 25% sodium hydroxide solution and 5 ml of water, and concentrate under reduced pressure. Add 10 ml of water to the residue, make basic with 25% aqueous sodium hydroxide under ice cooling, and extract sequentially with 10 ml and 5 ml of methylene chloride. The extract was washed with 5 ml of water, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure to yield 1.03 g of 8-methoxy-2-methyl-6,7-methylenedioxy-
1,2,3,4-tetrahydroisoquinoline was obtained. Yield 93% Reference example 4 8-methoxy-2-methyl-6,7-methylenedioxy-1,2,3,4- obtained in Reference Example 3
Dissolve 221 mg (1 mmol) of tetrahydroisoquinoline (1) and 108 mg (1.1 mmol) of potassium acetate in 2 ml of ethanol, and while heating this to approximately 75°C, dissolve 254 mg (1 mmol) of iodine in 2.4 ml of ethanol.
ml solution dropwise for 85 minutes or more. After heating at 75℃ for 100 minutes, ethanol was distilled off under reduced pressure, and the residue was diluted with water.
ml of 25% aqueous sodium hydroxide solution under ice cooling.
Add 0.6ml. After stirring for 30 minutes at room temperature, the crystals were collected, washed twice with 0.6 ml of water, and dried to obtain 217 mg of cotalunine. Yield 91% Example 8 2,3-methylenedioxyphenol (1) 690mg
(5 mmol) in toluene solution (5 ml) was added methylaminocetaldehyde dimethyl acetal (purity
Add 0.51 ml (4 mmol) of 98%) and 150 mg (5 mmol) of paraformaldehyde. This mixture is immersed in a 90°C bath while stirring and heated for 30 minutes. After distilling off toluene, the residue was separated and purified by silica gel column chromatography (developing solution = n-hexane/ethyl acetate = 2/1).
890 mg (yield, 80%) of -(2-hydroxy-3,4-methylenedioxybenzyl)-N-methylaminoacetaldehyde dimethyl acetal (2) was obtained. IR (neat, νmaxcm -1 ): 1645, 1485, 1370, 1060 1 H-NMR (60MHz in CDCl 3 , δppm): 2.27 (3H, s, NC H 3 ) 2.61 (2H, z, J = 5.5Hz, NC H 2 CH (OMe) 2 ) 3.30 (6H, s, OC H 3 ×2) 3.6 (2H, s,

【式】) 5.80(2H、s、【formula】) 5.80 (2H, s,

【式】) 実施例 9 2,3−メチレンジオキシフエノール(1)1.38g
(10mmol)と35%ホルマリン1.71g(15mmol)
のエタノール(12.5ml)溶液に、メチルアミノア
セトアルデヒドジメチルアセタール(純度98%)
1.93ml(15mmol)を加え、5時間加熱還流す
る。エタノールを留去後、残渣をシリカゲルカラ
ムクロマトグラフイーにて分離精製(展開溶媒:
n−ヘキサン/酢酸エチル=2/1)すると目的
物のN−(2ヒドロキシ−3,4−メチレンジオ
キシベンジル)−N−メチルアミノアセトアルデ
ヒドジメチルアセタール2が1.21g(収率47%)
得られた。 実施例 10 2−ヒドロキシ−3,4−メチレンジオキシベ
ンズアルデヒド(1)4.08gをアミノアセトアルデヒ
ドジメチルアセタール(純度99%)2.60gのトル
エン300ml溶液に加え、1時間加熱還流後、トル
エンを留去する。残渣をメタノール300mlに溶解
し、氷水浴上で撹拌しながら、水素化ホウ素ナト
リウム313mgを加える。反応終了後、メタノール
を留去し、水とエーテルを加え、水層を一旦酸性
とした後、炭酸水素ナトリウム水溶液で中和す
る。エーテル層を分離、水洗、乾燥(MgSO4)、
濃縮するとN−(2−ヒドロキシ−3,4−メチ
レンジオキシベンジル)−アミノアセトアルデヒ
ドジメチルアセタール(2)5.26g(収率78.4%)が
オイルとして得られた。 IR(neat、νmaxcm-1):3320、1645、1480、
1365、10601 H−NHR(60MHz in CDCl3、δppm): 2.77(2H、d、J=5.5Hz、NC 2CH(OMe)2) 3.36(6H、s、OC 3×2)、3.96(2H、s、
【formula】) Example 9 2,3-methylenedioxyphenol (1) 1.38g
(10 mmol) and 35% formalin 1.71 g (15 mmol)
Methylaminoacetaldehyde dimethyl acetal (98% purity) in ethanol (12.5 ml) solution of
Add 1.93 ml (15 mmol) and heat under reflux for 5 hours. After distilling off the ethanol, the residue was separated and purified using silica gel column chromatography (developing solvent:
n-hexane/ethyl acetate = 2/1), 1.21 g of the target product N-(2hydroxy-3,4-methylenedioxybenzyl)-N-methylaminoacetaldehyde dimethyl acetal 2 was obtained (yield 47%).
Obtained. Example 10 4.08 g of 2-hydroxy-3,4-methylenedioxybenzaldehyde (1) is added to a 300 ml solution of 2.60 g of aminoacetaldehyde dimethyl acetal (99% purity) in 300 ml of toluene, and after heating under reflux for 1 hour, the toluene is distilled off. Dissolve the residue in 300 ml of methanol and add 313 mg of sodium borohydride while stirring on an ice-water bath. After the reaction is completed, methanol is distilled off, water and ether are added to make the aqueous layer acidic, and then neutralized with an aqueous sodium hydrogen carbonate solution. Separate the ether layer, wash with water, dry (MgSO 4 ),
Upon concentration, 5.26 g (yield 78.4%) of N-(2-hydroxy-3,4-methylenedioxybenzyl)-aminoacetaldehyde dimethyl acetal (2) was obtained as an oil. IR (neat, νmaxcm -1 ): 3320, 1645, 1480,
1365, 1060 1 H-NHR (60MHz in CDCl 3 , δppm): 2.77 (2H, d, J = 5.5Hz, NC H 2 CH (OMe) 2 ) 3.36 (6H, s, OC H 3 ×2), 3.96 (2H,s,

【式】) 4.46(1H、t、J=5.5Hz、C(OMe)2)、
5.93(2H、s、
[Formula]) 4.46 (1H, t, J=5.5Hz, C H (OMe) 2 ),
5.93 (2H, s,

【式】) 実施例 11 2−ヒドロキシ−3,4−メチレンジオキシベ
ンズアルデヒド(1)6.7gをメタノール300mlに溶解
し、これに40%メチルアミン水溶液10mlを加え30
分間加熱還流した後、氷水浴上冷却し、撹拌しな
がら水素化ホウ素ナトリウム510mgを加えて反応
させる。メタノールを留去し、得られる残渣を水
に溶解し、一旦酸性とした後、直ちに炭酸水素ナ
トリウム水溶液で中和する。有機物をエーテルで
抽出し、エーテル層の水洗、乾燥(MgSO4)、濃
縮を行ない、得られる残渣(3.57g)を乾燥ピリ
ジン30mlに溶解し、p−トルエンスルホン酸クロ
リド7.52gを加え室温で3時間反応する。反応混
合物を氷水に投じ、エーテル抽出、エーテル層の
水洗、乾燥(MgSO4)、濃縮して得られる残渣
(7.13g)に1N水酸化ナトリウム水溶液80mlとメ
タノール80mlを加え加熱還流を5時間行なう。室
温に冷却後、メタノールを留去し、酸性とした後
エーテル抽出する。エーテル層の水洗、乾燥
(MgSO4)、濃縮を行なうと、4.40g(収率31.0
%)のN−(2−ヒドロキシ−3,4−メチレン
ジオキシベンジル)−N−メチル−p−トルエン
スルホンアミドが結晶(再結晶溶媒:エーテル)
として得られた。 mp.125−6℃ IR(KBr disk、νmaxcm-1):3470、1490、1330、
1160、10601 H−NMR(90MHz in CDCl3、δppm): 2.44(3H、s、
【formula】) Example 11 Dissolve 6.7 g of 2-hydroxy-3,4-methylenedioxybenzaldehyde (1) in 300 ml of methanol, add 10 ml of 40% methylamine aqueous solution, and mix for 30 minutes.
After heating under reflux for a minute, the mixture is cooled on an ice-water bath, and 510 mg of sodium borohydride is added while stirring to react. Methanol is distilled off, the resulting residue is dissolved in water, made acidic, and immediately neutralized with an aqueous sodium bicarbonate solution. The organic matter was extracted with ether, and the ether layer was washed with water, dried (MgSO 4 ), and concentrated. The resulting residue (3.57 g) was dissolved in 30 ml of dry pyridine, and 7.52 g of p-toluenesulfonic acid chloride was added thereto at room temperature. Time reacts. The reaction mixture was poured into ice water, extracted with ether, washed with water, dried (MgSO 4 ), and concentrated. To the resulting residue (7.13 g) were added 1N aqueous sodium hydroxide solution and 80 ml of methanol, and the mixture was heated under reflux for 5 hours. After cooling to room temperature, methanol is distilled off, acidified, and extracted with ether. The ether layer was washed with water, dried (MgSO 4 ), and concentrated to give 4.40 g (yield: 31.0
%) of N-(2-hydroxy-3,4-methylenedioxybenzyl)-N-methyl-p-toluenesulfonamide (recrystallization solvent: ether)
obtained as. mp.125−6℃ IR (KBr disk, νmaxcm -1 ): 3470, 1490, 1330,
1160, 1060 1 H-NMR (90MHz in CDCl 3 , δppm): 2.44 (3H, s,

【式】) 2.67(3H、s、NC 3) 4.03(2H、s、C 2NCH3) 5.95(2H、s、−OC 2O−) N−(2−ヒドロキシ−3,4−メチレンジオ
キシベンジル)−N−メチルアミノアセトアルデ
ヒドジメチルアセタール(1)432mgをエチルエーテ
ル1mlに溶解し、これに過剰のジアゾメタンを含
むエチルエーテル3mlを加え室温で一夜かきまぜ
る。エーテルを留去するとN−(2−メトキシ−
3,4−メチレンジオキシベンジル)−N−メチ
ルアミノアセトアルデヒドジメチルアセタール(2)
455mg(収率:定量的)が得られた。 実施例 13 60%水素化ナトリウムオイルデイスパージヨン
44mg(1.1ミリモル)を無水ヘキサン2mlで2回
洗いオイルを除く。これに無水N,N−ジメチル
ホルムアミド2mlを加え、ついでN−(2−メト
キシ−3,4−メチレンジオキシベンジル)−p
−トルエンスルホンアミド(1)335mg(1ミリモル)
を加える。これにブロモアセトアルデヒドジエチ
ルアセタール(純度95%)0.18ml(1.1ミリモル)
を加え、100℃で10時間加熱撹拌する。冷却後水
5mlを加え、塩化エチレン8ml、2mlで順次抽出
する。抽出液を水洗(5ml)後、無水硫酸マグネ
シウムで乾燥し、過する。液を減圧濃縮し残
渣をシリカゲルクロマトグラフイーにより精製す
る(溶離後:酢酸エチル/n−ヘキサン=1/
4)と、358mgのN−(2−メトキシ−3,4−メ
チレンジオキシベンジル)−N−(p−トルエンス
ルホニル)アミノアセトアルデヒドジエチルアセ
タール(2)がオイルとして得られた。収率79% 参考例 6 実施例13で得られたN−(2−メトキシ−3,
4−メチレンジオキシベンジル)−N−(p−トル
エンスルホニル)アミノアセトアルデヒドジエチ
ルアセタール(1)69.89g(0.155モル)をジオキサ
ン194mlに溶解し、これに濃塩酸14.7ml(0.169モ
ル)、水47.1mlを加え、2時間40分間加熱還流す
る。これを約5℃まで冷却し、析出した結晶を
取し、冷ジオキサン30mlで洗い乾燥すると22.95
gの8−メトキシ−6,7−メチレンジオキシイ
ソキノリン塩酸塩(2)が黄色結晶として得られた
(収率61.8%)。 得られた化合物(2)17.8g(74.3ミリモル)を水
50mlに加え、塩化メチレン100mlを加えて、水冷
下25%水酸化ナトリウム水溶液で塩基性とする。
分液し水層を塩化メチレン20mlで抽出して塩化メ
チレン層を合わせ、水30mlで洗う。これを無水硫
酸マグネシウムで乾燥後減圧濃縮すると、15.06
gの8−メトキシ−6,7−メチレンジオキシイ
ソキノリン(3)が得られた(収率99.7%)。これを
酢酸エチル−n−ヘキサンから再結晶した。
mp.144−5℃) IR(KBr、νmaxcm-1):1595、1460、10401 H−NMR(60MHz in CDCl3、δppm): 4.17(3H、s、OC 3) 5.97(2H、s、
[Formula]) 2.67 (3H, s, NC H 3 ) 4.03 (2H, s, CH 2 NCH 3 ) 5.95 (2H, s, -OC H 2 O-) Dissolve 432 mg of N-(2-hydroxy-3,4-methylenedioxybenzyl)-N-methylaminoacetaldehyde dimethyl acetal (1) in 1 ml of ethyl ether, add 3 ml of ethyl ether containing excess diazomethane, and stir at room temperature. Stir overnight. When the ether is distilled off, N-(2-methoxy-
3,4-methylenedioxybenzyl)-N-methylaminoacetaldehyde dimethyl acetal (2)
455 mg (yield: quantitative) was obtained. Example 13 60% sodium hydride oil dispersion
Wash 44 mg (1.1 mmol) twice with 2 ml of anhydrous hexane to remove oil. To this was added 2 ml of anhydrous N,N-dimethylformamide, and then N-(2-methoxy-3,4-methylenedioxybenzyl)-p
-Toluenesulfonamide (1) 335 mg (1 mmol)
Add. Add to this 0.18 ml (1.1 mmol) of bromoacetaldehyde diethyl acetal (95% purity)
Add and heat and stir at 100℃ for 10 hours. After cooling, add 5 ml of water and extract sequentially with 8 ml and 2 ml of ethylene chloride. The extract was washed with water (5 ml), dried over anhydrous magnesium sulfate, and filtered. The liquid is concentrated under reduced pressure and the residue is purified by silica gel chromatography (after elution: ethyl acetate/n-hexane = 1/
4) and 358 mg of N-(2-methoxy-3,4-methylenedioxybenzyl)-N-(p-toluenesulfonyl)aminoacetaldehyde diethyl acetal (2) were obtained as an oil. Yield 79% Reference example 6 N-(2-methoxy-3, obtained in Example 13)
Dissolve 69.89 g (0.155 mol) of 4-methylenedioxybenzyl)-N-(p-toluenesulfonyl)aminoacetaldehyde diethyl acetal (1) in 194 ml of dioxane, add 14.7 ml (0.169 mol) of concentrated hydrochloric acid, and 47.1 ml of water. and heated under reflux for 2 hours and 40 minutes. Cool this to about 5℃, collect the precipitated crystals, wash with 30ml of cold dioxane, and dry.
g of 8-methoxy-6,7-methylenedioxyisoquinoline hydrochloride (2) was obtained as yellow crystals (yield 61.8%). 17.8 g (74.3 mmol) of the obtained compound (2) was added to water.
50 ml, add 100 ml of methylene chloride, and make basic with 25% aqueous sodium hydroxide solution while cooling with water.
Separate the layers, extract the aqueous layer with 20 ml of methylene chloride, combine the methylene chloride layers, and wash with 30 ml of water. After drying this with anhydrous magnesium sulfate and concentrating it under reduced pressure, 15.06
g of 8-methoxy-6,7-methylenedioxyisoquinoline (3) was obtained (yield 99.7%). This was recrystallized from ethyl acetate-n-hexane.
mp.144-5℃) IR (KBr, νmaxcm -1 ): 1595, 1460, 1040 1 H-NMR (60MHz in CDCl 3 , δppm): 4.17 (3H, s, OC H 3 ) 5.97 (2H, s,

【式】) 6.72(1H、s、【formula】) 6.72 (1H, s,

【式】) 7.35(1H、d、J=6Hz、
[Formula]) 7.35 (1H, d, J = 6Hz,

【式】) 8.30(1H、d、J=6Hz、
[Formula]) 8.30 (1H, d, J = 6Hz,

【式】) 9.30(1H、s、【formula】) 9.30 (1H, s,

【式】) 参考例 7 酸化白金0.5gを酢酸20mlに加え、撹拌しなが
ら30分間水素を通す。これに参考例6で得られた
8−メトキシ−6,7−メチレンジオキシイソキ
ノリン(1)4.06g(20ミリモル)を加え、75℃、大
気圧17時間接触還元を行なう。冷却後、触媒を
去し、液を減圧濃縮する。残つたオイルに水20
ml、塩化メチレン20mlを加え、氷冷下25%水酸化
ナトリウム水溶液を加え、塩基性とする。分液
し、水層を塩化メチレン5mlで抽出し、塩化メチ
レン層を合わせて水10mlで洗う。無水硫酸マグネ
シウムで乾燥後、溶媒を減圧濃縮し、残渣をシリ
カゲルクロマトグラフイーにより精製する(溶離
液:メタノール/クロロホルム=1/20ついで
1/3)と8−メトキシ−6,7−メチレンジオ
キシ−1,2,3,4−テトラヒドロキノリン(2)
3.23gが結晶として得られた。収率78%1 H−NMR(60MHz in CDCl3、δppm): 2.44(1H、s、N 3.87(2H、s、
[Formula]) Reference example 7 Add 0.5 g of platinum oxide to 20 ml of acetic acid, and pass hydrogen through it for 30 minutes while stirring. To this was added 4.06 g (20 mmol) of 8-methoxy-6,7-methylenedioxyisoquinoline (1) obtained in Reference Example 6, and catalytic reduction was carried out at 75°C and atmospheric pressure for 17 hours. After cooling, the catalyst is removed and the liquid is concentrated under reduced pressure. 20ml of water to the remaining oil
ml and 20 ml of methylene chloride, and add 25% aqueous sodium hydroxide solution under ice cooling to make basic. Separate the layers, extract the aqueous layer with 5 ml of methylene chloride, combine the methylene chloride layers, and wash with 10 ml of water. After drying over anhydrous magnesium sulfate, the solvent is concentrated under reduced pressure, and the residue is purified by silica gel chromatography (eluent: methanol/chloroform = 1/20 then 1/3) and 8-methoxy-6,7-methylenedioxy. -1,2,3,4-tetrahydroquinoline (2)
3.23g was obtained as crystals. Yield 78% 1H -NMR (60MHz in CDCl3 , δppm): 2.44 (1H, s, NH ) 3.87 (2H, s,

【式】) 3.97(3H、s、OC 3) 5.82(2H、s、[Formula]) 3.97 (3H, s, OC H 3 ) 5.82 (2H, s,

【式】) 6.27(1H、s、【formula】) 6.27 (1H, s,

〔発明の効果〕〔Effect of the invention〕

本発明の化合物は、医薬として有用なトリトク
ワリンの製造の主要原料であるコタルニンの合成
中間体として有用である。
The compound of the present invention is useful as an intermediate for the synthesis of cotarnin, which is the main raw material for the production of tritoqualin, which is useful as a pharmaceutical.

Claims (1)

【特許請求の範囲】 1 下記一般式(): 〔式中、R1は水素原子またはメチル基を表わし、
Xは水素原子、メチル基またはトシル基を表わ
し、Yは水素原子、メチル基または 【式】(R2およびR3は、同一でも異 つてもよい低級アルキル基を表わす。)を表わ
す。〕 で示されるベンジルアミン誘導体。
[Claims] 1. The following general formula (): [In the formula, R 1 represents a hydrogen atom or a methyl group,
X represents a hydrogen atom, a methyl group or a tosyl group, and Y represents a hydrogen atom, a methyl group or the formula (R 2 and R 3 represent a lower alkyl group which may be the same or different). ] A benzylamine derivative represented by
JP60186963A 1985-08-26 1985-08-26 Benzylamine derivative Granted JPS6248678A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP60186963A JPS6248678A (en) 1985-08-26 1985-08-26 Benzylamine derivative
HU863589A HUT44774A (en) 1985-08-26 1986-08-15 Process for producing benzylamine derivatives
US06/896,961 US4769480A (en) 1985-08-26 1986-08-15 Benzylamine derivative
EP19900402393 EP0404694A3 (en) 1985-08-26 1986-08-22 4-hydroxy-8-methoxy-2-methyl-6, 7-methylenedioxy-1,2,3,4-tetrahydroisoquinoline, and process for preparing the same
EP19900401305 EP0387156A3 (en) 1985-08-26 1986-08-22 A process for preparing cotarnine
EP86401866A EP0214051A3 (en) 1985-08-26 1986-08-22 Benzylamine derivative
KR1019860007130A KR900000967B1 (en) 1985-08-26 1986-08-26 Benzylamine derivatives and their preparation
CA000516840A CA1309720C (en) 1985-08-26 1986-08-26 Benzylamine derivative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60186963A JPS6248678A (en) 1985-08-26 1985-08-26 Benzylamine derivative

Publications (2)

Publication Number Publication Date
JPS6248678A JPS6248678A (en) 1987-03-03
JPH0511114B2 true JPH0511114B2 (en) 1993-02-12

Family

ID=16197788

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60186963A Granted JPS6248678A (en) 1985-08-26 1985-08-26 Benzylamine derivative

Country Status (1)

Country Link
JP (1) JPS6248678A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4880963B2 (en) * 2005-09-27 2012-02-22 パナソニック電工株式会社 Probe support, probe device, in vivo component measuring device

Also Published As

Publication number Publication date
JPS6248678A (en) 1987-03-03

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