The Biogenetic-Type Cyclization of the Unsaturated Monocyclic Alcohol with Formic Acid; Facile Synthesis of the Tricarbocyclic Alcohol, (+)-2-Epi-allo-cedrol
摘要:
用甲酸水解可得到烯丙基柏木醇骨架的三环化合物的立体和特定的甲酸酯,水解后可得到不饱和醇,即 (+)-(1S,5R,7R,8S)-2,6,6,7-四甲基三环[5.2.2.01,5]undec-2-en-8-ol (27) and (+)-(1S,5R,7R,8R-2,6,6,7-tetramethyltricyclo[5.2.2.01,5]undec-2-en-8-ol.27 的氢化反应得到了 (+)-(1R,2S,5R,7R,8S)-2,6,6,7-四甲基三环[5.2.2.01,5]十一碳-8-醇、(+)-2-表烯-8-醇。
Enantiospecifictotalsynthesis of the sesquiterpene aciphyllene and its three epimers have been described starting from the readily available monoterpene (R)-limonene employing an intramolecular type II carbonyl ene reaction as the key step.
A two-phase route for the synthesis of fusicoccane diterpenes enabled the total synthesis of alterbrassicicene D (1) and 3(11)-epoxyhypoestenone (2) and the structural determination of 2. The route yielded 15 g of 3 in eight steps from (R)-limonene and 720 mg of the penultimate intermediate in a protecting-group-free manner. This penultimate intermediate was found to have tumourigenesis-abolishing
合成fusicoccane二萜的两相路线使得alterbrassicicene D ( 1 ) 和3(11)-epoxyhypoestenone ( 2 ) 的全合成以及2的结构测定成为可能。该路线通过八步从( R )-柠檬烯产生了15克3 ,并以无保护基的方式产生了720毫克倒数第二个中间体。人们发现这种倒数第二个中间体具有消除肿瘤发生的潜力。
Enantiospecific first total synthesis and confirmation of the relative and absolute stereostructure of isocalamusenone
作者:Adusumilli Srikrishna、Vijendra H. Pardeshi、Konda Mahesh
DOI:10.1016/j.tetasy.2010.09.008
日期:2010.10
The enantiospecific total synthesis of two epimers of the sesquiterpene isocalamusenone has been accomplished starting from the readily available monoterpene (R)-limonene which of the natural product established the stereostructure and the absolute configuration (C) 2010 Elsevier Ltd All rights reserved
Enantiospecific synthesis and confirmation of the relative and absolute stereostructure of 11-hydroxyguaiadienes
作者:Adusumilli Srikrishna、Vijendra H. Pardeshi、Konda Mahesh
DOI:10.1016/j.tetasy.2010.11.018
日期:2010.12
Enantiospecific total synthesis of two epimeric sesquiterpenes 11-hydroxyguaiadienes has been accomplished starting from the readily available monoterpene (R)-limonene, which confirmed the structure and absolute configuration of the natural products. (C) 2010 Elsevier Ltd. All rights reserved.