Synthesis and structure–activity relationships of N2-alkylated quaternary β-carbolines as novel antitumor agents
摘要:
A series of novel N-2-alkylated quaternary beta-carbolines was synthesized by modification of position-1, 2,7 and 9 of beta-carboline nucleus with various alkyl and arylated alkyl substituents, and their cytotoxic activities in vitro and antitumor potencies in mice were evaluated. Compound 3m was found to be the most potent antitumor agent. SARs analysis revealed that (1) the substituents in position-2 and 9 of beta-carboline nucleus played a vital role in modulation of antitumor activity; (2) the benzyl and 3-phenylpropyl substituents in position-2 and 9 of beta-carboline ring were the optimal substituents giving rise to significant antitumor agent. These compounds might be a novel promising class of antitumor agents with clinical development potential. (C) 2013 Elsevier Masson SAS. All rights reserved.
Efficient access to β- and γ-carbolines from a common starting material by sequential site-selective Pd-catalyzed C–C, C–N coupling reactions
作者:Tran Quang Hung、Do Trung Hieu、Dinh Van Tinh、Ha Nam Do、Tuan Anh Nguyen Tien、Dang Van Do、Le Thanh Son、Ngoc Han Tran、Nguyen Van Tuyen、Vu Minh Tan、Peter Ehlers、Tuan Thanh Dang、Peter Langer
DOI:10.1016/j.tet.2019.130569
日期:2019.10
Two efficient and practical approaches are reported for the synthesis of β- and γ-carboline derivatives from 3,4-dibromopyridine as a common starting material. The β-carbolines were prepared by site-selective Pd-catalyzed C–C coupling with o-bromophenylboronic acid and subsequent cyclization by double C–N coupling with amines. γ-Carbolines were prepared from the same starting material by C–N coupling