Highly stereoselective aziridine ring-opening with phenylselenide anion and selective intramolecular aldol closure for the enantiopure synthesis of γ-aminocyclopentene derivatives
作者:José Alvano Pérez-Bautista、Martha Sosa-Rivadeneyra、Leticia Quintero、Herbert Höpfl、Farid Andrés Tejeda-Dominguez、Fernando Sartillo-Piscil
DOI:10.1016/j.tetlet.2009.07.070
日期:2009.10
enantiopure synthesis for the preparation of key intermediates of conformationally locked γ-amino acid and nucleoside analogues is described. First, a highly stereoselective aziridine ring-opening reaction with phenylselenide anion was employed for the stereoselective synthesis of the chiral aminoselenide (1S,2S,1′S)-8, which after N-benzylation was transformed into the corresponding allyl amine (1S
描述了一种实用且对映纯的合成方法,用于制备构象锁定的γ-氨基酸和核苷类似物的关键中间体。首先,与苯硒化物阴离子进行高度立体选择性的氮丙啶开环反应用于手性氨基硒化物(1 S,2 S,1 'S)-8的立体选择性合成,在N-苄基化反应后转化为相应的烯丙基胺(H 2 O 2氧化得到1 S,1 'S)-7。然后,(1二羟基-dehomologation小号,1'小号) - 7与(OSO 4通过/ NMO,NaIO 4)通过内部碱催化的分子内选择性醛醇缩合选择性地提供所需的γ-氨基环戊烯醛(S)-1及其对应的γ-氨基酸(S)-2。