Approach to the Tricyclic Core of the Tigliane–Daphnane Diterpenes. Concerning the Utility of Transannular Aldol Additions
摘要:
Two transannular (TA) aldol reactions were used to assemble the tricyclic carbon skeleton found in the tigliane and daphnane classes of diterpene natural products.
Approach to the Tricyclic Core of the Tigliane–Daphnane Diterpenes. Concerning the Utility of Transannular Aldol Additions
摘要:
Two transannular (TA) aldol reactions were used to assemble the tricyclic carbon skeleton found in the tigliane and daphnane classes of diterpene natural products.
Abstract A synthetic strategy for the proposed structure of the pandangolide 1 is disclosed starting from 1,3-propane diol in 18-steps. Sharpless asymmetric dihydroxylation, Keck allylation, Yamaguchi esterification, and Grubbs ring closing metathesis were the key steps in the synthesis. Graphical Abstract