Geraniol was converted, using Sharpless oxidations as key steps, into the chiral tuans-tri-substituted tetrahydrofuran 10, from which chrysotricine was synthesized in 16 steps (1.1% overall yield). (C) 2000 Elsevier Science Ltd. All rights reserved.
Geraniol was converted, using Sharpless oxidations as key steps, into the chiral tuans-tri-substituted tetrahydrofuran 10, from which chrysotricine was synthesized in 16 steps (1.1% overall yield). (C) 2000 Elsevier Science Ltd. All rights reserved.
Oxidative cyclization of tertiary pentenol derivatives forming 2,5,5-trisubstituted THF rings and the total synthesis of cyclocapitelline
作者:Geoffrey A. Phillips、Cory Palmer、Andrew C. Stevens、Mathew L. Piotrowski、Daryl S.R. Dekruyf、Brian L. Pagenkopf
DOI:10.1016/j.tetlet.2015.09.064
日期:2015.10
The synthesis of 2,5,5-trisubstituted tetrahydrofuran rings was accomplished via the Mukaiyama aerobic oxidativecyclization of tertiary 5-pentenols employing the Co(nmp)2 catalyst. A variety of THFs were formed in moderate to good yield and diastereoselectivity. The method developed herein was successfully applied to an enantioselective total synthesis of cyclocapitelline.
A protecting-group-free synthesis of arbusculone, andirolactone, pinnatolide, ipomolactone, cyclocapitelline and isocyclocapitelline
作者:Srinivas Gajula、Madasu Madhu、Suresh Kumar Chintakrinda、J.S. Yadav、Debendra K. Mohapatra
DOI:10.1016/j.tetlet.2018.10.024
日期:2018.11
A general approach for a collective synthesis of natural products containing substituted THF ring is described. In this paper, Arbusculone, a small molecule natural product accomplished using a short route, is used as the key intermediate to achieve the total synthesis of Andirolactone, Pinnatolide, Ipomolactone, Cyclocapitelline, Isocyclocapitelline and their two isomers in less than ten steps. The