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J Med Chem. 1992 Jan;35(1):177-84.

Inhibitors of protein kinase C. 1. 2,3-Bisarylmaleimides.

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1
Roche Products Limited, Welwyn Garden City, Herts., U.K.

Abstract

The design and synthesis of a series of novel inhibitors of protein kinase C (PKC) is described. These 2,3-bisarylmaleimides were derived from the structural lead provided by the indolocarbazoles, staurosporine and K252a. Optimum activity required the imide NH, both carbonyl groups, and the olefinic bond of the maleimide ring. 2,3-Bisindolylmaleimides were the most active, and the potency of these was improved by a chloro substituent at the 5-position of one indole ring (compound 28, IC50 0.11 microM). In a series of (phenylindolyl)maleimides, nitro compound 74 was most active (IC50 0.67 microM). Naphthalene 19 and benzothiophene 21 showed greater than 100-fold selectivity for inhibition of PKC over the closely related cAMP-dependent protein kinase (PKA).

PMID:
1732526
DOI:
10.1021/jm00079a024
[Indexed for MEDLINE]

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