Nucleophilic Substitution Reaction in Indole Chemistry: A Synthesis of Novel 7b-Substituted Yohimbine and 4aa-Substituted 1,2,3,4-Tetrahydro-b-carboline Derivatives
作者:Masanori Somei、Katsumasa Yoshino、Fumio Yamada
DOI:10.3987/com-08-s(n)57
日期:——
X-Ray analyses of 1-hydroxyyohimbine derivatives clearly show the deviation of the N(1)¯O bond from the indole molecular plane. This phenomenon supports our working hypothesis "bishomoallylic conjugation". The deviation is responsible for the unprecedented nucleophilic substitutionreaction in 1-hydroxyindole chemistry and effected the synthesis of novel 7β-heteroarylyohimbine and 4aa-heteroaryl-l
1-羟基育亨宾衍生物的 X 射线分析清楚地显示了 N(1)¯O 键与吲哚分子平面的偏差。这种现象支持我们的工作假设“双烯丙基共轭”。该偏差导致 1-羟基吲哚化学中前所未有的亲核取代反应,并影响了从相应的 1-羟基吲哚衍生物合成新型 7β-杂芳基育亨宾和 4aa-杂芳基-1,2,3,4-四氢-β-咔啉衍生物.