Electroreductive cleavage of 2-methylene-9,10-anthraquinone (Maq) esters of carboxylic acids and N-substituted carbamic acids: protecting groups for carboxylic acids and primary amines
The chemical modification of the dual histamine H-2 and gastrin receptor antagonists described in our preceding paper, particularly the modification of spacers as well as the alteration of their connecting bonds at the gastrin receptor antagonist site (GA) from the amide bond to the carbamate bond, significantly improved not only their dual activity but also the GA versus CCK-A receptor selectivity. Copyright (C) 1996 Elsevier Science Ltd
USRE37658E1
申请人:——
公开号:USRE37658E1
公开(公告)日:2002-04-16
Electroreductive cleavage of 2-methylene-9,10-anthraquinone (Maq) esters of carboxylic acids and N-substituted carbamic acids: protecting groups for carboxylic acids and primary amines
作者:Ronald L. Blankespoor、Aldrich N. K. Lau、Larry L. Miller
DOI:10.1021/jo00197a021
日期:1984.11
Synthesis of 9-<i>O</i>-Substituted Derivatives of 9-Hydroxy-5,6-dimethyl-6<i>H</i>- pyrido[4,3-<i>b</i>]carbazole-1-carboxylic Acid (2-(Dimethylamino)ethyl)amide and Their 10- and 11-Methyl Analogues with Improved Antitumor Activity
Analogues of the antitumor drug S 16020-2 modified at the 9, 10, or 11 position were synthesized and evaluated in vitro and in vivo on the P388 leukemia and B16 melanoma models. Starting from 9-methoxy-5, 11-dimethyl-6H-pyrido[4,3-b]carbazole-1-carboxylic acidethyl ester, the 11-CH3 analogue of 9-hydroxy-5,6-dimethyl-6H-pyrido[4, 3-b]carbazole-1-carboxylic (2-(dimethylamino)ethyl)amide (1), compound