A Novel Biomimetic Route to the 3-Acyl-5-hydroxy-3-pyrrolin-2-one and 3-Acyl-3,4-epoxy-5-hydroxypyrrolidin-2-one Ring Systems
作者:Barry B. Snider、Bobbianna J. Neubert
DOI:10.1021/jo048605r
日期:2004.12.1
3-acyl-5-hydroxy-3-pyrrolin-2-ones 18, 24, and 27 with the ring system of oteromycin (3), UCS1025A (5), and related natural products. Further oxidation of 18 yielded 3-acyl-3,4-epoxy-5-hydroxy-pyrrolidin-2-one 19 with the ring system of fusarin C (1) and epolactaene (2). Dehydration of 18 afforded 20 with the talaroconvolutin A (4) ring system.
醇的改性莫法特氧化17,22,和25个将经历分子内羟醛缩合反应在治疗用NaOH溶液,得到的醛,得到4-吡咯啉-2-酮16,23,和26。氧化,DMDO在-40℃下提供3-酰基-5-羟基-3-吡咯啉-2-酮18,24,和27与oteromycin(环系统3),UCS1025A(5),和相关的自然产物。18与进一步的氧化反应生成3-酰基-3,4-环氧-5-羟基-吡咯烷基-2-酮19与富沙林C的环系统(1)和epolactaene(2)。talaroconvolutin A(4)环系统脱水得到18,得到20。