Short and efficient synthesis of the antitumor heptenes melodienone and isomelodienone
摘要:
The antitumor heptenes melodienone and isomelodienone were synthesized in 5 steps from 2-methoxyfuran (overall yield = 36 and 45% respectively) via oxidative ring-opening of a common methoxyfuran precursor. (C) 1998 Elsevier Science Ltd. All rights reserved.
Total syntheses of melodienones by redox isomerization of propargylic alcohols
作者:Chunmao Dong、Weiwei Peng、Huan Wang、Xiao Zhang、Jun Zhang、Guishan Tan、Kangping Xu、Zhenxing Zou、Haibo Tan
DOI:10.1039/d1ob00599e
日期:——
construction of the (E)- and (Z)-γ-oxo-α,β-alkenoic ester skeletons from readily accessible vinyl propargylic alcohols through modified redox isomerization was uncovered. This approach manifested its high simplicity and efficiency with excellent tolerance of functional substituents, which led to the straightforward structural modifications of various naturalproducts and efficient totalsyntheses of melodienone
揭示了一种显着的碱基促进方法,用于通过改性氧化还原异构化从易于获得的乙烯基炔丙醇快速构建 ( E )- 和 ( Z )-γ-氧代-α,β-链烯酸酯骨架。该方法具有高度的简单性和高效性,并且对功能取代基具有出色的耐受性,这导致了各种天然产物的直接结构修饰,并在 4 个线性步骤内高效地全合成了 melodienone、hommelodienone、isomelodienone 和 homoisomelodienone。
Synthesis of melodienone and 7-hydroxy-6-hydromelodienone, two heptenes from Melodorum fruticosum.
作者:Achille Barco、Simonetta Benetti、Carmela De Risi、Gian P. Pollini、Romeo Romagnoli、Vinicio Zanirato
DOI:10.1016/s0040-4020(01)89589-2
日期:1994.1
An unified approach to the construction of the seven carbon atom framework of the title compounds having a gamma-oxoacrylate moiety as common structural feature, utilizing an intermolecular [3+2] cycloaddition of the nitrile oxide generated from a malic acid derived C-4 aldehyde fragment with methyl acrylate, is described.