The invention is directed to a process for the manufacture of pancreatic lipase-inhibiting oxetanone ethyl esters of the formula ##STR1## wherein X is undecyl or 2Z,5Z-undecadienyl; C.sub.6 is n-hexyl; Y is isobutyl and Z is formyl or Y is carbamoylmethyl and Z is acetyl; which process comprises esterifying the corresponding oxetanone ethanols, or hydrogenating the 3-undecenyl group in corresponding oxetanone ethyl ester starting materials to the undecyl group X, or N-formylating or N-acetylating corresponding primary amines.
本发明涉及一种制备胰
脂肪酶抑制剂氧杂
环己酮乙酸乙酯的方法,其
化学式为##STR1##其中X为
十一烷基或2Z,5Z-十一烯基;C.sub.6为正己基;Y为异丁基,Z为甲酰基或Y为
氨甲基甲基,Z为乙酰基。该方法包括酯化相应的氧杂
环己酮乙醇,或将相应的氧杂
环己酮乙酸乙酯起始材料中的3-十一烯基氢化为
十一烷基X,或N-甲酰化或N-乙酰化相应的主要胺。