Synthesis of optically active af-(1-Ethyl-3-methylhexahydro-1,3-diazin-5-yl)- and<i>N</i>-(1-Ethyl-5-methyloctahydro-1,5-diazocin-3-yl)pyridine-3-carboxamides
作者:Yoshimi Hirokawa、Hiroshi Yamazaki、Shiro Kato
DOI:10.1002/jhet.5570390417
日期:2002.7
(9) through the intramolecular amidation of (R)-3-[N-[(2-benzyloxycarbonylamino-3-methylamino)propyl]-N-ethyl]aminopropionic acid trifluoroacetate (12), followed by lithium aluminum hydride reduction of the resulting 6-oxo-1-ethyl-5-methyloctahydrodiazocine (13) in 41% yield. Reaction of the amines 6 and 15 with 5-bromo-2-methoxy-6-methylaminopyridine-3-carboxylic acid furnished the desired 2 and 3
作为多巴胺D 2和5-羟色胺5-HT 3受体拮抗剂1的结构-活性关系的一部分,它是具有广泛止吐活性的临床候选药物,其合成与多巴胺D 2和5-羟色胺5-HT 3受体的结合亲和力(R)-5-溴-N-(1-乙基-3-甲基六氢-1,3-二氮杂-5-基)-和(R)-5-溴-N-(1-乙基-5-甲基八氢-描述了1,5-重氮基-3-基)-2-甲氧基-6-甲基氨基吡啶-3-甲酰胺-(2和3)。1-乙基-2-(对甲苯磺酰基)氨基-3-甲基氨基丙烷二氢氯化物的处理(4a)用低聚甲醛和连续的脱保护得到5-氨基六氢-1,3-二嗪6的优良收率。由2-(苄氧羰基)氨基-3-[[ N-(叔丁氧羰基)-N-甲基]氨基] -1制备3-氨基-1-乙基-5-甲基八氢-1,5-重氮化合物(15)-ethylaminopropane(9)至(的分子内酰胺化- [R)-3- [ ñ - [(2-苄氧基羰基-3-甲基氨基)丙基] - ñ