Synthesis, Conformational Analysis, and Biological Evaluation of Heteroaromatic Taxanes
作者:Gunda I. Georg、Geraldine C. B. Harriman、Michael Hepperle、Jamie S. Clowers、David G. Vander Velde、Richard H. Himes
DOI:10.1021/jo951961c
日期:1996.1.1
cytotoxicity against B16 melanoma cells. 3'-Dephenyl-3'-(2-pyridyl)paclitaxel (31), 3'-dephenyl-3'-(2-furyl)paclitaxel (34), N-BOC-3'-dephenyl-3'-(2-furyl)paclitaxel (43), 3'-dephenyl-3'-(2-furyl)-N-(hexanoyl)paclitaxel (44), and N-debenzoyl-N-(3-furoyl)paclitaxel (51) were found to be more cytotoxic than paclitaxel against this cell line. 3'-Dephenyl-3'-(4-pyridyl)paclitaxel (33) and N-debenzoyl-N-(2-furoyl)paclitaxel
描述了通过手性酯烯酸酯-亚胺环缩合化学的不对称合成杂芳族3-[(叔丁基二甲基甲硅烷基)氧基] -2-氮杂环丁酮12-16。氮杂环丁酮含有杂芳族部分,在某些情况下,由于过渡态中可能的交替配位,导致对映选择性降低。随后将(3R,4S)-3-[(叔丁基二甲基甲硅烷基)氧基] -4-杂芳基-2-氮杂环丁烷酮转化为杂芳族紫杉烷31-36和43-45。3'-(2-吡啶基)类似物31和3'-(2-呋喃基)类似物43的构象分析表明,它们具有与紫杉醇和多西他赛几乎相同的溶液构象偏好。杂芳族N-酰基紫杉醇类似物47-51由N-去苯甲酰基紫杉醇经Schotten-Baumann酰化制备。与紫杉醇相比,14种类似物中的大多数在微管组装试验中显示出良好至优异的活性。还测试了类似物对B16黑素瘤细胞的细胞毒性。3'-脱苯基-3'-(2-吡啶基)紫杉醇(31),3'-脱苯基-3'-(2-呋喃基)紫杉醇(34),N-BO