Department of Chemistry and Biochemistry, Cancer Research Institute, Arizona State University, PO Box 871604, Tempe, Arizona 85287-1604, USA.
J Nat Prod. 2009 May 22;72(5):876-83. doi: 10.1021/np800635h.
A modified synthetic route to combretastatin D-2 (5) was devised in order to further evaluate its biological activity, for its conversion to phosphate prodrugs (25-28), and as a route to obtaining dihydro-combretastatin D-2 (42). A parallel first total synthesis of dihydro-combretastatin D-2 was completed, proceeding from a saturated 3-phenylpropionic ester intermediate via the Ullmann biaryl ether reaction (39-41). In contrast to the cancer cell growth inhibitory activity exhibited by combretastatin D-2, relatively minor structural modifications (41, 42) caused elimination of those properties.
为了进一步评估其生物活性、将其转化为磷酸盐前药(25-28)以及作为获得二氢康普瑞汀 D-2(42)的途径,设计了一种改良的康普瑞汀 D-2(5)的合成路线。通过 Ullmann 联苯醚反应(39-41),从饱和 3-苯基丙酸酯中间体出发,平行地完成了二氢康普瑞汀 D-2 的首次全合成。与康普瑞汀 D-2 表现出的癌细胞生长抑制活性相反,相对较小的结构修饰(41、42)导致这些性质的消除。