摘要
以L-酪氨酸为起始原料,在碱性条件下与苯甲酰氯缩合得到N-苯甲酰基-O-苯甲酰基-L-酪氨酸(Ⅰ),收率87%;然后,在氯甲酸异丁酯-N-甲基吗啉(IBCF-NMM)的作用下与L-苯丙氨醇缩合形成具有双酰胺结构的N-(N-苯甲酰基-O-苯甲酰基-L-酪氨酰基)-L-苯丙氨醇(Ⅱ),收率80.7%;经碱水解得N-(N-苯甲酰基-L-酪氨酰基)-L-苯丙氨醇(Ⅲ),收率84.5%;在N,N-二甲基甲酰胺和无水K2CO3的作用下与二甲氨基氯乙烷盐酸盐反应4 h后得N-(N-苯甲酰基-O-二甲氨基乙基-L-酪氨酰基)-L-苯丙氨醇(Ⅳ),收率79%;最后,化合物Ⅳ在以1-乙基-(3-二甲基氨基丙基)碳酰二亚胺盐酸盐(EDC.HCl)和4-二甲氨基吡啶(DMAP)为缩合剂的条件下与有机酸反应,合成了以苯丙二肽类化合物马蹄金素〔N-(N-苯甲酰基-L-苯丙氨酰基)-O-乙酰基-L-苯丙氨醇,MTS〕为先导化合物的衍生物共11个,其结构经NMR、ESI-MS进行了确认。
N-Benzoyl-O-benzoyl-L-tyrosine ( Ⅰ ) was synthesized in 87 % yield by reaction of L-tyrosine with benzoyl chloride under alkaline condition. N-(N-Benzoyl-O-benzoyl-L-tyrosyl)-L-phenylalaninol (Ⅱ) was formed by condensation with L-phenylalaninol under the isobutyl chloroformate / 4- methylmorpholine (IBCF-NMM) in 80.7% yield ; N- (N-benzoyl-L-tyrosyl) -L-phenylalaninol ( Ⅲ ) was synthesized by alkaline hydrolysis of N-( N-benzoyl-O-benzoyl-L-tyrosyl)-L-phenylalaninol (Ⅱ) in 84.5% yield. The reaction of Ⅲ with 2-dimethylaminoethyl chloride hydrochloride in the presence of K2CO3 gave N-[ N-benzoyl-O-( 2-dimethylaminoethyl )-L-tyrosyl ]-L-phenylalaninol ( Ⅳ ) in 79% yield. 11 compounds of derivatives of MTS were synthesized by esterification of compounding N- [ N- benzoyl-O- (2-dimethylaminoethyl) -L-tyrosyl ] -L-phenylalaninol ( Ⅳ ) with a series of organic acids in the presence of EDC · HC1 and 4-dimethylamino pyridine. Their structures were confirmed by NMR and ESI-MS.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2013年第8期925-931,943,共8页
Fine Chemicals
基金
国家"重大新药创制"科技重大专项资助项目(2011ZX09102-009-2)
贵州省中药现代化资助项目([2010]5018
[2012]5054)
贵阳中医学院研究生教育创新计划项目(ZYYCX12018)~~
关键词
马蹄金素
衍生物
双酰胺
酯化反应
医药原料
Matijing-Su
derivatives
bisamides
esterification
drug materials