Stereospecific synthesis of 2,7-dimethyl-trans,trans-2,6-octadiene-1,8-dial, a tail-to-tail all-trans bifunctional isoprenoid synthetic unit. Convenient synthesis of squalene
Synthesis and biomimetic rearrangement of a chiral diterpene dioxide
作者:Thomas Lindel、Burchard Franck
DOI:10.1016/0040-4039(95)02066-7
日期:1995.12
As pan of a biomimetic approach towards me marine triterpene teurilene (2), the synthesis of the chiral diepoxide 3 is described. Aiming at the synthesis of the squalene tetraepoxide 1, double Sharpless epoxidation led to the intermediate bisglycidic alcohol 7 being subject to a stereochemical analysis.
Epoxide-Opening Cascades Triggered by a Nicholas Reaction: Total Synthesis of Teurilene
作者:Julio Rodríguez-López、Fernando Pinacho Crisóstomo、Nuria Ortega、Matías López-Rodríguez、Víctor S. Martín、Tomás Martín
DOI:10.1002/anie.201209159
日期:2013.3.25
Natural inspiration: Based on the biosynthesis of squalene‐derived polyethers, a totalsynthesis of teurilene is described. The carbocation formation in the Nicholasreaction serves to control the initiation of a polyepoxide ring‐opening cascade. The three furan rings present in teurilene were obtained in excellent yield in one step. Boc=tert‐butoxycarbonyl, TMS=trimethylsilyl.
First Highly Efficient Asymmetric Synthesis of the<i>Hyrtios Erectus</i>Diketotriterpenoid
作者:Dieter Enders、Thomas Schüßeler
DOI:10.1055/s-2002-34949
日期:——
The first highly efficientasymmetricsynthesis of the diketotriterpenoid 1, isolated from the Indonesian marine sponge Hyrtios erectus, in good overall yield and employing simple starting materials such as butanone, is described. Both stereogenic centres at the C-6 and C-19 positions of the C 2 -symmetrical molecule were generated via u-alkylation employing the SAM P/RAMP hydrazone method with high
描述了二酮三萜类化合物 1 的第一个高效不对称合成,该合成方法从印度尼西亚海海绵 Hyrtios rectangleus 中分离出来,具有良好的总产率,并使用简单的起始材料(如丁酮)。在 C 2 对称分子的 C-6 和 C-19 位置处的两个立体中心都是通过使用具有高不对称诱导的 SAM P/RAMP 腙方法的 u-烷基化产生的(de,ee ≥ 96%)。天然材料的绝对构型确定为 RR
Morimoto, Yoshiki; Muragaki, Koji; Iwai, Toshiyuki, Angewandte Chemie - International Edition, 2000, vol. 39, # 22, p. 4082 - 4084