描述了 callipeltoside A 的对映选择性全合成。包括大环内酯亚基的两种合成:第一种依赖于爱尔兰-克莱森重排来产生三取代的烯烃几何结构,第二种利用对映选择性插烯羟醛反应来实现此目的。还公开了糖和氯代环丙烷侧链片段的对映选择性合成。该天然产物的相对和绝对立体化学通过与侧链片段的两种对映异构体的片段偶联来确定。
Callipeltoside A: Total Synthesis, Assignment of the Absolute and Relative Configuration, and Evaluation of Synthetic Analogues
作者:Barry M. Trost、Janet L. Gunzner、Olivier Dirat、Young H. Rhee
DOI:10.1021/ja0205232
日期:2002.9.1
alkylation (AAA). The novelty of the latter protocol is its control of regioselectivity as well as absolute configuration. The trisubstituted olefin is generated using an alkene-alkyne coupling to create a trisubustituted olefin with complete control of geometry. The excellent chemo- and regioselectivity highlights the synthetic potential of this new ruthenium catalyzed process. The macrolactonization employs
Enantioselective total synthesis of callipeltoside A: two approaches to the macrolactone fragment
作者:David A. Evans、Jason D. Burch、Essa Hu、Georg Jaeschke
DOI:10.1016/j.tet.2008.02.001
日期:2008.5
The enantioselectivetotalsynthesis of callipeltoside A is described. Two syntheses of the macrolactone subunit are included: the first relies upon an Ireland-Claisen rearrangement to generate the trisubstituted olefin geometry and the second utilizes an enantioselective vinylogous aldol reaction for this purpose. Enantioselective syntheses of the sugar and chlorocyclopropane side chain fragments
描述了 callipeltoside A 的对映选择性全合成。包括大环内酯亚基的两种合成:第一种依赖于爱尔兰-克莱森重排来产生三取代的烯烃几何结构,第二种利用对映选择性插烯羟醛反应来实现此目的。还公开了糖和氯代环丙烷侧链片段的对映选择性合成。该天然产物的相对和绝对立体化学通过与侧链片段的两种对映异构体的片段偶联来确定。
10.1002/1521-3773(20020301)41
作者:Trost, Barry M、Dirat, Olivier、Gunzner, Janet L
DOI:10.1002/1521-3773(20020301)41
日期:——
Synchronous bond molecular dynamics of conjugated chlorocyclopropyl alk‐yn‐enes revealed by ECD and UV–vis
作者:Colin K. Skepper、Tadeusz F. Molinski
DOI:10.1002/chir.23240
日期:2020.8
Chlorocyclopropanes (CCPs) conjugated to alk‐yn‐enes occur in a unique family of polyketide natural products from marine sponges. Synthesis of several optically enriched analogs of CCPs and measurement of their UV–vis spectra and electronic circular dichroism (ECD) spectra reveal unusually strong hyperconjugation that constrains and aligns the cyclopropyl C‐C bond with the π‐plane of the distal ene‐bond