Synthesis of Metabolites of S-1452, an Orally Active Thromboxane A2 Receptor Antagonist.
作者:Fumihiko WATANABE、Takaharu MATSUURA、Kazuhiro SHIRAHASE、Mitsuaki OHTANI
DOI:10.1248/cpb.39.2842
日期:——
The synthesis of 16 metabolites of S-1452, an orally active thromboxane A2 (TXA2) receptor antagonist, is described. Regioselective hydroxylation at C-5 or C-6 of the bicyclo[2.2.1]heptane skeleton of the optically active intermediate 16 was attempted by using 9-borabicyclo[3.3.1]nonane followed by H2O2 or m-chloroperbenzoic acid (m-CPBA) and then LiA1H4, to obtain the hydroxylated product 17a or 17b
描述了口服活性血栓烷A2(TXA2)受体拮抗剂S-1452的16种代谢产物的合成。光学活性中间体16的双环[2.2.1]庚烷骨架的C-5或C-6区域选择性羟基化的方法是,先使用9-硼环[3.3.1]壬烷,然后加入H2O2或间氯过苯甲酸(m CPBA),然后再加入LiAlH4,分别得到羟基化产物17a或17b。修饰17a和17b的C-2取代基得到S-1452的八个代谢物。通过使用类似的反应顺序合成了八种非羟基化代谢物。