The synthesis of the E ring of gambierol was achieved from D-ribose via the intramolecular reaction of allylstannane with an aldehyde as a key step. The undesired stereoisomer formed in this reaction was converted to the desired product by using DBU isomerization. (C) 1998 Elsevier Science Ltd. All rights reserved.
The synthesis of the E ring of gambierol was achieved from D-ribose via the intramolecular reaction of allylstannane with an aldehyde as a key step. The undesired stereoisomer formed in this reaction was converted to the desired product by using DBU isomerization. (C) 1998 Elsevier Science Ltd. All rights reserved.
A short and convergent total synthesis of (+)-cladospolide D is delineated, which involves olefin cross metathesis and furan oxidation to access the γ-oxo-α,β-unsaturated acid and Yamaguchi lactonization to construct the 12-membered ring as key steps.
描述了 (+)-cladospolide D 的短而收敛的全合成,其中包括烯烃交叉复分解和呋喃氧化以获取 γ-氧代-α,β-不饱和酸和 Yamaguchi 内酯化以构建 12 元环作为关键步骤.