Intramolecular Stetter cyclisation of Morita–Baylis–Hillman adducts: a versatile approach towards bicycloenediones
作者:Pierre Wasnaire、Thierry de Merode、István E. Markó
DOI:10.1039/b710492h
日期:——
Bicyclic enediones of various sizes can be efficiently assembled by intramolecular Stetter cyclisation of readily available MoritaâBaylisâHillman adducts.
作者:James D. McChesney、Pokar M. Kabra、Philip Fraher
DOI:10.1002/jps.2600680915
日期:1979.9
Callicarpone, a component 10 times as toxic to fish as rotenone, has been isolated from the leaves of Callicarpa candicans. It is reasonable to assume that callicarpone will act as an insecticidal agent as does rotenone. Therefore, the structure-activity relationship of callicarpone was examined by synthesizing a series of compounds having certain of its structural features. Those compounds were tested
Synthesis of 1α,25-Dihydroxyvitamin D Analogues Featuring a S2-symmetric CD-ring Core
作者:Garrett Minne、Lieve Verlinden、Annemieke Verstuyf、Pierre De Clercq
DOI:10.3390/molecules14020894
日期:——
Three analogues of 1a,25-dihydroxyvitamin D3 (calcitriol), featuring a trans-fused decalin C,D-core with local S2-symmetry, and possessing identical side-chain and seco-B,A-ring structures, have been synthesized starting from readily available (4aR,8aS)-octahydronaphthalene-1,5-dione (7). The very short sequences involve the simultaneous introduction of the side-chain and seco-B,A-ring fragments via Suzuki and Sonogashira coupling reactions. The analogues are devoid of relevant biological activity.
Synthesis of the C- and D-Ring System of Hemibrevetoxin-B
作者:Fei Feng、Akio Murai
DOI:10.1246/cl.1992.1587
日期:1992.8
The C- and D-ring system of hemibrevetoxin-B, which has been isolated from the red tide organism, Gymnodinium breve, has been synthesized in a racemic form on the basis of our new methodology involving the general conversion of medium sized lactone into the corresponding cyclic ether.
根据我们的新方法,将中等大小的内酯一般转化为相应的环醚,合成了外消旋形式的血布韦毒素-B 的 C 环和 D 环系统。