作者:Philip J Parsons、Nicholas P Camp、Neil Edwards、L Ravi Sumoreeah
DOI:10.1016/s0040-4020(99)00909-6
日期:2000.1
efficient synthesis of the potent nicotinic acetylcholine receptor agonist, anatoxin-a and its analogues is described, which uses a β-lactam ring opening–transannular cyclisation sequence to set up the bridged bicyclic framework of the natural product. The synthesis involves a cycloaddition of chlorosulfonyl isocyanate with cyclooctadiene followed by Boc protection of the resulting β-lactam. Reaction
本文描述了一种新型的高效烟碱乙酰胆碱受体激动剂anatoxin- a及其类似物的合成方法,该方法利用β-内酰胺开环-环环形环化序列建立了天然产物的桥连双环骨架。合成包括将氯磺酰基异氰酸酯与环辛二烯环加成,然后用Boc保护所得的β-内酰胺。β-内酰胺与多种亲核试剂反应,然后进行硒介导的环化和氧化反应,从而产生了带有多种侧链的抗毒素骨架。该方法为有效量的抗毒素a及其类似物提供了灵活的入口。