Azetidine-2-carboxylic acids are transformed readily to the corresponding beta-lactams by iminium salt formation and reaction of the salt with a suitable nucleophile. The beta-lactams and substitution products thereof are useful intermediates in the synthesis of biologically active lactams such as nocardicin.
Azetidine-2-
羧酸易于通过
亚胺盐形成和与合适亲核试剂反应而转化为相应的β-内酰胺。β-内酰胺及其取代产物是
生物活性内酰胺如诺卡菌素合成中有用的中间体。