Structural Analogues of the Calanolide Anti-HIV Agents. Modification of the <i>trans</i>-10,11-Dimethyldihydropyran-12-ol Ring (Ring C)
作者:David E. Zembower、Shuyuan Liao、Michael T. Flavin、Ze-Qi Xu、Tracy L. Stup、Robert W. Buckheit,、Albert Khilevich、Aye Aye Mar、Abram K. Sheinkman
DOI:10.1021/jm960355m
日期:1997.3.1
extract of Calophyllum lanigerum, along with seven related compounds. In order to examine the structure-activity relationships of the trans-10,11-dimethyldihydropyran-12-ol ring (designated ring C), a series of structural analogues were prepared and evaluated using a whole cell cytopathicity assay (XTT). Removal of the 10-methyl group resulted in decreased activity, with only one epimer exhibiting anti-HIV
(+)-Calanolide A是一种有效的1型人类免疫缺陷病毒(HIV-1)逆转录酶抑制剂,该酶是从Calophyllum lanigerum的提取物中与7种相关化合物分离得到的。为了检查反式10,11-二甲基二氢吡喃-12-ol环(指定为C环)的结构活性关系,制备了一系列结构类似物并使用全细胞细胞病变试验(XTT)进行了评估。除去10-甲基导致活性降低,只有一种差向异构体表现出抗HIV活性。用乙基链取代10-甲基可保持抗HIV活性,相对于外消旋甘醇二胺A,效力仅降低4倍。用异丙基部分取代10-甲基可完全消除抗HIV活性。在10或11位上添加一个额外的甲基,可以保持母体甘醇内酯体系的基本立体化学特征,同时消除各个碳原子上的手性,但相对于甘醇内酯A而言,活性降低。在所有上述示例中,在10-和11-烷基部分之间具有顺式关系的类似物完全没有活性。12-羟基处于酮氧化态的合成中间体表现出抑制HIV的活性,对于10