作者:John H. Hoare、Peter Yates
DOI:10.1039/c39810001126
日期:——
3-Acetoxy-1, 4-dibenzyl-3-(3-methoxy-1-methyl-enepropyl)piperazine-2, 5-dione (4) has been synthesized both via cyclization of N-benzyl-N(N-benzylcarbamoylmethyl)-5-methoxy-3-methylene-2-oxopentanamide (10) and via cleavage of the epoxide ring of 4, 7-dibenzyl-2-(2-methoxyethyl)-2-methyl-1-oxa-4, 7-diazaspiro [2.5]-octane-5, 8-dione (12); the hydroxy-compound (2) corresponding to (4) has been synthesized
3-乙酰氧基-1,4-二苄基-3-(3-甲氧基-1-甲基-烯丙基)哌嗪-2,5-二酮(4)都通过N-苄基-N(N-苄基氨基甲酰基甲基)的环化而合成。-5-甲氧基-3-亚甲基-2-氧戊酰胺(10)并通过4,7-二苄基-2-(2-甲氧基乙基)-2-甲基-1-氧杂4,7-二氮杂螺环的环的断裂[2.5]-辛烷-5,8-二酮(12); 通过环化对应于(10)的(四氢吡喃-2-基氧基)乙基化合物(15),合成了对应于(4)的羟基化合物(2)。