Enantioselective Synthesis of 15-Deoxy-Δ<sup>12,14</sup>-Prostaglandin J<sub>2</sub>
作者:Jiaming Li、Brian M. Stoltz、Robert H. Grubbs
DOI:10.1021/acs.orglett.9b04198
日期:2019.12.20
An enantioselective synthesis of 15-deoxy-Δ12,14-prostaglandin J2 is reported. The synthesis begins with the preparation of enantiopure 3-oxodicyclopentadiene by a lipase-mediated kinetic resolution. A three-component coupling followed by a retro-Diels-Alder reaction provides the C8 stereochemistry of the prostaglandin skeleton with high enantioselectivity. Stereoretentive olefin metathesis followed
报道了15-脱氧-Δ12,14-前列腺素J2的对映选择性合成。合成开始于通过脂肪酶介导的动力学拆分制备对映体纯的3-氧二环戊二烯。三组分偶联后进行逆Diels-Alder反应,可为前列腺素骨架提供高对映选择性的C8立体化学。立体定向烯烃复分解,然后进行Pinnick氧化,可以得到高对映体纯度的15-脱氧-Δ12,14-前列腺素J2。