133085-69-5Relevant academic research and scientific papers
Benzimidazoles and medicaments containing these compounds
-
, (2008/06/13)
The invention relates to benzimidazoles of the formula STR1 in which R1 to R2 are as defined in claim 1, 1 and 3 isomer mixtures thereof and addition salts thereof which have valuable properties. In particular, the novel compounds ar
6-Substituted benzimidazoles as new nonpeptide angiotensin II receptor antagonists: Synthesis, biological activity, and structure-activity relationships
Ries,Mihm,Narr,Hasselbach,Wittneben,Entzeroth,Van Meel,Wienen,Hauel
, p. 4040 - 4051 (2007/10/02)
Starting from the recently reported nonpeptidic angiotensin II (AII) receptor antagonists DuP 753 (1) and Exp 7711 (2), we have designed and investigated novel substituted benzimidazoles. Systematic variation of several substituents at the benzimidazole ring positions 4-7 led to the finding that substitution in position 6 with acylamino groups results in highly active AII antagonists. Compounds with 6-membered lactam or sultam substituents in position 6 of benzimidazole showed receptor activities in the low nanomolar range but were only weakly active when given orally to rats. In contrast, analogous substitution of the benzimidazole moiety with basic heterocycles resulted in potent AII antagonists which were also well absorbed after oral application. The most active compound of this series, 33 (BIBR 277), was selected as a candidate for clinical development. On the basis of molecular modeling studies a binding model of this new class of AII antagonists to the AT1 receptor is proposed.
