can be oxidised with iodobenzene dichloride–pyridine under anhydrous conditions to give the 3,4-unsaturated esters, which after isomerisation and deprotection afford the sodium salts of (±)-PS-5 and (±)-6-epi PS-5.
的反式-和顺式-取代的β内酰胺的同分异构体p硝基苄3-(2- acetamidoethylthio)-6-乙基-7-氧代-1-
氮杂双环〔3.2.0〕
庚烷-2-
羧酸叔丁酯可以以二
氯化
碘代苯氧化-
吡啶在无
水条件下生成3,4-不饱和酯,异构化和脱保护后,得到(±)-PS-5和(±)-6- Epi PS-5的钠盐。