New Minor Diterpenoid Diacylglycerols from the Skin of the Nudibranch Anisodoris fontaini

摘要: The Patagonian dorid nudibranch Anisodoris fontaini contains in its mantle a series of isocopalane diterpenoid diacylglycerols. Five new minor metabolites, anisodorins 1-5 (1-5), along with the already reported 6 and 7, have been isolated chemically characterized. structure relative stereochemistries determined by spectroscopic means, while absolute for 2-5 are suggested to be same as biogenetically related major compounds 7. Synthesis enantiomer (8) anisodorin 1 confirmed proposed stereochemistry.