Olivanic acid analogues. Part 1. Total synthesis of the 7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate system and some related β-lactams
作者:John H. Bateson、Andrew J. G. Baxter、Patricia M. Roberts、Terence C. Smale、Robert South-Gate
DOI:10.1039/p19810003242
日期:——
4-Allylazetidin-2-one, prepared from penta-1,4-diene and chlorosulphonyl isocyanate, has been used to synthesise the parent 7-oxo-1-azabicyclo[3.2.0] hept-2-ene-2-carboxylate system of the naturally occurring olivanic acids, using an intramolecular Witting reaction to construct the 2,3-double bond. Cyclisation of ketones derived from the 4-allyl grouping produced 3-substituted derivatives, while use
由五-1,4-二烯和氯磺酰基异氰酸酯制备的4-烯丙基氮杂环丁烷-2-酮已用于合成母体7-氧代-1-氮杂双环[3.2.0]庚-2-烯-2-羧酸酯体系使用分子内Witting反应来构建2,3-双键的天然低聚酸。衍生自4-烯丙基基团的酮环化生成3-取代的衍生物,同时使用由六-1,5-二烯和氯磺酰基异氰酸酯制得的氮杂环丁烷-2-一已得到同源的8-氧代-1-氮杂双环[4.2] .0]辛-2-烯系统。