An enantiocontrolled synthesis of pyrrolizidines, (−)-platynecine and (−)-hadinecine
作者:Sung Ho Kang、Geun Tae Kim、Yong Sang Yoo
DOI:10.1016/s0040-4039(96)02371-4
日期:1997.1
alcohols 13 and 14 have been converted into a single isomeric trans-oxazoline 16via an intramolecular iodoamidation of the corresponding trichloro-acetimidates, which have been elaborated into (−)-platynecine 1 and (−)-hadinecine 2via a common intermediate pyrrolizidine 3.
三取代的烯丙醇13和14已通过相应的三氯乙酰亚胺的分子内碘代酰胺化反应转变为单一的异构反式-恶唑啉16,它们已通过共同的中间体被精制为(-)-铂炔1和(-)-hadinecine 2吡咯嗪3。