Formation of an 6α, 14-epoxy-bridged isomorphinan, an unusual product from a substituted 6α,14-dihydroxymorphinan
作者:Ronda D. Davis、Timothy D. Nelson、Wendel L. Nelson
DOI:10.1002/jhet.5570310638
日期:1994.11
transfer catalysis conditions (potassium hydroxide, tetrabutylammonium bromide, methylene chloride), formation of a new 6α,14-epoxide-bridged isomorphinan (4) was noted. Chemical and spectral evidence, including nmr and mass spectral data, are presented to prove its structure. Its formation results from 6α-oxygen displacement of a 14-O-aralkyl ether intermediate under the phase transfer catalysis alkylation
在相转移催化条件下(氢氧化钾,四丁基溴化铵,二氯甲烷)将3 - O-苄基-6α-纳曲醇(1)与大型芳烷基卤化物(如2-溴甲基萘和9-氯甲基蒽)烷基化期间,形成新的6α,14注意到-环氧桥接的异吗啡喃(4)。化学和光谱证据,包括核磁共振和质谱数据,被提出来证明其结构。其形成是由于在相转移催化烷基化条件下14- O-芳烷基醚中间体的6α-氧置换。