Synthesis and Formation Mechanism of a Compound with an Unprecedented Skeleton: Dodecahydro-4,10:5,9-diepoxydipyrrolo[3,4-<i>b</i>:3′,4′-<i>f</i>][1,5]diazocine
作者:Misaki Shinoda、Nobuyoshi Morita、Kosaku Tanaka, III、Yoshimitsu Hashimoto、Shintaro Ban、Osamu Tamura
DOI:10.1248/cpb.c20-00561
日期:2020.12.1
The reaction of N-(2-[(tert-butyldimethylsilyl)oxy]imino}ethyl)-4-methyl-N-(3-phenylprop-2-yn-1-yl)benzenesulfonamide (6b) with BF3·OEt2 afforded a compound with an unprecedented dodecahydro-4,10 : 5,9-diepoxydipyrrolo[3,4-b:3',4'-f][1,5]diazocine skeleton (7) after aqueous work-up. The formation mechanism of meso-7 appears to involve dimerization of the hydrated forms (6aS)-C and (6aR)-C of the initial
N-(2-[(叔丁基二甲基甲硅烷基)氧基]亚氨基}乙基)-4-甲基-N-(3-苯基丙-2-炔-1-基)苯磺酰胺(6b)与BF3·OEt2的反应得到经过水处理后,具有前所未有的十二氢-4,10:5,9-二环氧双吡咯并[3,4-b:3',4'-f] [1,5]重氮电影骨架(7)的化合物。meso-7的形成机理似乎涉及初始外消旋产物9的水合形式(6aS)-C和(6aR)-C的二聚化,该阳离子是由阳离子C在9的C3a位置上质子化而生成的。易水合9的驱动力可能是9的环应变的释放,这部分是由于弯曲的sp2-杂化的C3a碳引起的。