1-Hydroxyyohimbine and Its Derivatives: New Potent a2-Blockers for the Treatment of Erectile Dysfunction
摘要:
1-Hydroxyyohimbine and its various derivatives are prepared for the first time. These novel compounds are found to be potent alpha(2)-blockers comparable to yohimbine itself.
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
Synthesis of 1-Hydroxyyohimbine and Its Novel Skeletal Rearrangement Reaction into Oxindole Derivatives
作者:Masanori Somei、Koichi Noguchi、Fumio Yamada
DOI:10.3987/com-01-9226
日期:——
1-Hydroxyyohimbine was prepared for the first time. Its skeletal rearrangement reaction either directly into 2-oxindole or into 3-oxindole derivatives by a series of reaction is reported. 1-Hydroxyyohimbine and some of its derivatives showed potent alpha2 blocking activity.