Role of Conformational Effects on the Regioselectivity of Macrocyclic INOC Reactions: Two New Asymmetric Total Syntheses of (+)-Brefeldin A<sup>,</sup><sup>1</sup>
作者:Deukjoon Kim、Jongkook Lee、Phil Jong Shim、Joong Inn Lim、Takayuki Doi、Sanghee Kim
DOI:10.1021/jo010744a
日期:2002.2.1
regioselectivity of the macrocyclic intramolecularnitrileoxidecycloaddition observed in our (+)-brefeldin A synthesis. During the course of this regiochemical study, we have developed two novel stereoselective and regioselective schemes for totalsynthesis of (+)-brefeldin A (i.e. intramolecularnitrileoxide cycloaddition-isomerization and intermolecular nitrileoxide cycloaddition-ring closing metathesis
Asymmetric Total Synthesis of (+)-Brefeldin A from (<i>S</i>)-Lactate by Triple Chirality Transfer Process and Nitrile Oxide Cycloaddition<sup>,</sup><sup>1</sup>
作者:Deukjoon Kim、Jongkook Lee、Phil Jong Shim、Joong Inn Lim、Hyunil Jo、Sanghee Kim
DOI:10.1021/jo010743i
日期:2002.2.1
A novel synthesis of (+)-brefeldin A (1) has been accomplished on the basis of triple chirality transfer methodology, intramolecular ester enolate alkylation, and both intra- and intermolecular nitrile oxide cycloaddition strategies.