Synthesis and Cyclic AMP Phosphodiesterase 4 Isoenzyme Inhibitory Activity of Heterocycle Condensed Purines.
作者:Hirokazu Suzuki、Manabu Yamamoto、Susumu Shimura、Ken-ichi Miyamoto、Kenji Yamamoto、Hiroyuki Sawanishi
DOI:10.1248/cpb.50.1163
日期:——
To reverse the adverse reactions of alkylxanthines and to develop novel inhibitors of cyclic AMP phosphodiesterase 4 (PDE4), a series of heterocycle [a]-, [b]-, [c,d]-, and [i]-condensed purines were designed and synthesized. Although all compounds did not display PDE1 and PDE3 inhibitory activities, several heterocycle [i]-condensed purines strongly inhibited PDE4. Especially, dl-3,4-dipropyl-8-methyl-4,5,7,8-tetrahydro-1H-imidazo[2,1-i]purin-5-one (dl-7c) exhibited comparable PDE4 inhibitory activity (IC50=1.9 μM) to rolipram and denbufylline (DBF).
为了逆转烷基黄嘌呤的不良反应并开发新型环磷酸腺苷磷酸二酯酶4(PDE4)抑制剂,设计并合成了一系列杂环[a]-、[b]-、[c,d]-和[i]-稠合嘌呤。尽管所有化合物均未表现出PDE1和PDE3抑制活性,但几种杂环[i]-稠合嘌呤对PDE4表现出强烈抑制作用。特别是dl-3,4-二丙基-8-甲基-4,5,7,8-四氢-1H-咪唑并[2,1-i]嘌呤-5-酮(dl-7c)显示出与罗利普兰和丹布非林(DBF)相当的PDE4抑制活性(IC50=1.9 μM)。