A Novel Approach in Drug Discovery: Synthesis of Estrone-Talaromycin Natural Product Hybrids
作者:Lutz F. Tietze、Gyula Schneider、János Wölfling、Anja Fecher、Thomas Nöbel、Sönke Petersen、Ingrid Schuberth、Christian Wulff
DOI:10.1002/1521-3765(20001016)6:20<3755::aid-chem3755>3.0.co;2-l
日期:2000.10.16
reaction of the steroidal exocyclic enol ethers 14 and 15, obtained from the secoestrones 8 and 9 by reduction, iodoetherification, and elimination, with ethyl O-benzoyldiformylacetate (16) leads to the spiroacetals 17 and 18 as a mixture of four diastereomers. Reduction of the major diastereomers 17a and 18a with DIBAH and subsequent hydrogenation yields the novel natural product hybrids 21, 23, 24, and
甾烯醇外环烯醇醚14和15与O-苯甲酰基二甲酰乙酸乙酯(16)通过还原,碘醚化和消除反应而从癸二酮8和9获得的杂-Diels-Alder反应导致螺缩醛17和18为以下混合物四个非对映异构体。用DIBAH还原主要的非对映异构体17a和18a并随后氢化产生了新颖的天然产物杂化物21、23、24和25,它们具有类固醇雌酮(7)和霉菌毒素他拉霉素6的结构特征。