The utility of a D-glucose-derived aziridine carboxylate was demonstrated for the synthesis of polyhydroxylated quinolizidine and indolizidine alkaloids. The chemoselective reduction of 1 followed by two-carbon homologation by the Wittig reaction afforded gamma,delta-aziridino-alpha,beta-unsaturated ester 9, which on regioselective nucleophilic aziridine ring opening either by using water as a nucleophile
证实了
D-葡萄糖衍生的
氮丙啶羧酸酯可用于多羟基化
喹喔啉和
吲哚并立定
生物碱的合成。
化学选择性还原1,然后通过Wittig反应进行两碳同源,得到gamma,δ-
叠氮基-α,β-不饱和酯9,该酯在区域选择性亲核
氮丙啶环上开环(通过使用
水作为亲核试剂或氢化得到δ-内酰胺) 11/16-真正的合成子,用于合成四种结构不同的亚
氨基糖,即
喹喔啉生物碱5b / 5c,swainsonine 6b和lentiginosine 7b类似物。研究了这些亚
氨基糖的糖苷酶抑制活性。