Iodine(V) Reagents in Organic Synthesis. Part 1. Synthesis of Polycyclic Heterocycles via Dess−Martin Periodinane-Mediated Cascade Cyclization: Generality, Scope, and Mechanism of the Reaction
作者:K. C. Nicolaou、P. S. Baran、Y.-L. Zhong、K. Sugita
DOI:10.1021/ja012124x
日期:2002.3.1
reaction of unsaturated anilides discovered during the total synthesis of the CP-molecules (phomoidrides A and B) are delineated. A plethora of heterocyclic compounds are accessible by employing gamma,delta-unsaturated amides (derived fromanilines and carboxylic acids), urethanes, or ureas (derived from isocyanates and allylic alcohols and amines) as substrates. Optimization of the reaction led to room-temperature
描述了在 CP 分子(phomoidrides A 和 B)的全合成过程中发现的不饱和苯胺的 Dess-Martin periodinane 介导的环化反应的范围、一般性和机制。通过使用γ,δ-不饱和酰胺(衍生自苯胺和羧酸)、氨基甲酸酯或脲(衍生自异氰酸酯和烯丙醇和胺)作为底物,可以获得大量杂环化合物。反应的优化导致室温条件,而同位素标记研究为这种级联反应提供了机械原理。
[EN] HETEROCYCLIC COMPOUNDS AS PRMT5 INHIBITORS<br/>[FR] COMPOSÉS HÉTÉROCYCLIQUES EN TANT QU'INHIBITEURS DE PRMT5
申请人:ANGEX PHARMACEUTICAL INC
公开号:WO2020243178A1
公开(公告)日:2020-12-03
The present disclosure describes novel heterocyclic PRMT5 inhibitors and methods for preparing them. The pharmaceutical compositions comprising such PRMT5 inhibitors and methods of using them for treating cancer, infectious diseases, and other PRMT5 associated disorders are also described.
The unusual behavior of hypervalent iodine reagents, Dess - Martin periodinane and IBX, with an array of anilides leads to the formation of complex heterocycles in only one synthetic operation (see scheme). Furthermore, the substrates for these transformations are available in one step from readily available commercial building blocks. The mechanism by which these periodinanes interact with anilides
Synthesis of cyano-substituted γ-lactams through a copper-catalyzed cascade cyclization/cyanation reaction
作者:Wen Liu、Liang Wang、Haiping Mu、Qian Zhang、Zeguo Fang、Dong Li
DOI:10.1039/d2ob02086f
日期:——
A convenient copper-catalyzedcascade cyclization/cyanation reaction for the construction of cyano-containing γ-lactams was developed. The protocol employed TMSCN as the cyano source and proceeded in water under simple conditions. Mechanistic studies indicated this reaction involved an amidyl radical initiated cascade 5-exo-trig cyclization/cyanation process. It is capable of generating a series of