13-Step total synthesis of Dendrodolide K following iterative Bartlett–Smith iodocarbonate cyclization
作者:Debendra K. Mohapatra、Karthik Pulluri、Srinivas Gajula、Jhillu S. Yadav
DOI:10.1016/j.tetlet.2015.09.126
日期:2015.11
A convergent total synthesis of Dendrodolide K has been achieved starting from commercially available homoallyl alcohol 17 in 13 longest linear sequence with 18.2% overall yield. The key features of this synthesis are Bartlett–Smith iodocarbonate cyclization reaction for the construction of 1,3-syn centers of the polyol system, Sharpless epoxidation followed by titanocene induced deoxygenation of 2
从市售的均烯丙基醇17开始,以13个最长的线性序列实现了Dendrodolide K的收敛的全合成,总产率为18.2%。该合成的关键特征是用于建立多元醇体系1,3-顺式中心的Bartlett-Smith碘代碳酸酯环化反应,Sharpless环氧化,随后钛茂金属诱导的2,3-环氧醇脱氧以将立体中心固定在C-3上位置,山口酯化,然后进行闭环复分解(RCM)反应,形成大内酯。