trans-2,3,5,7,15-Pentaacetoxyjatropha-6(17),11-diene-9,14-dione, a Diterpene Oligoester

The title compound (systematic name: 3,6,6,14-tetramethyl-10-methylene-2,7-dioxobicyclo[10.3.0]pentadeca- 4-ene-1,9,11,13,14-pentayl pentaacetate; C₃₀H₄₀O₁₂) is a new diterpene oligoester. The structure consists of a five-membered and a twelve-membered ring, both of which are nonplanar. They are inclined to each other at an angle of 28.89 (15)°. The five-membered ring has an envelope conformation.

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