Stereochemically General Approach to Adjacent Bis(tetrahydrofuran) Cores of Annonaceous Acetogenins
作者:Laura M. Wysocki、Matthew W. Dodge、Eric A. Voight、Steven D. Burke
DOI:10.1021/ol062390l
日期:2006.11.1
A series of six 2,5-disubstituted adjacent bis(tetrahydrofuran) stereoisomers with trans/erythro/cis, trans/threo/trans, or cis/threo/cis relative stereochemistry have been synthesized from known dihydroxycyclooctenes via ring opening/cross metathesis and Pd(0)-mediated asymmetric double cycloetherification. The stereochemistry of four of these isomers has been found in the biologically active annonaceous
通过开环/交叉复分解和Pd从已知的二羟基环辛烯合成了一系列六个具有反式/赤式/顺式,反式/苏式/反式或顺式/苏式/顺式相对立体化学的2,5-二取代的相邻双(四氢呋喃)立体异构体(0)介导的不对称双环醚化。这些异构体中的四种异构体的立体化学已在具有生物活性的非丙酮产乙酸原的天然产物中发现。[反应:请参见文字]。