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Introduction of a conformational switching element on a pyrrolidine ring. Synthesis and evaluation of (R*,R*)-(+/-)-methyl 3-acetyl-4-[3- (cyclopentyloxy)-4-methoxyphenyl]-3-methyl-1-pyrrolidinecarboxylate, a potent and selective inhibitor of cAMP-specific phosphodiesterase.

Glaxo Wellcome Research

Design and synthesis of conformationally constrained analogues of 4-(3-butoxy-4-methoxybenzyl)imidazolidin-2-one (Ro 20-1724) as potent inhibitors of cAMP-specific phosphodiesterase.

Glaxo Wellcome Research