Enzyme-catalysed baeyer–villiger oxidations of some substituted bicyclo[3.2.0]heptanones
作者:Andrew J. Carnell、Stanley M. Roberts、Vladimir Sik、Andrew J. Willetts
DOI:10.1039/c39900001438
日期:——
The ketones 1 and 4 are oxidized to γ-lactones 2 and 5 with low enantioselectivity by both Acinetobacter sp. NCIB 9871 and Pseudomonas sp. NCIB 9872; in contrast the ketones 7 and 10 are biotransformed to products 8/9 and 11 respectively of very high optical purity.
Synthesis of (3S,4R)-eldanolide and (5S,12R)-leukotriene-B4 through photolysis of optically active hydroxy-7,7-dimethylbicyclo[3.2.0]heptanones
作者:H. Geoff Davies、Stanley M. Roberts、Basil J. Wakefield、John A. Winders
DOI:10.1039/c39850001166
日期:——
Photoisomerisation of 3-hydroxy-7,7-dimethylbicyclo[3.2.0]heptan-6-ones is the key step in a new route to the pheromone eldanolide while leukotriene-B4 is available through a photolytic retro[2 + 2] reaction of 2-hydroxy-7,7-dimethylbicyclo[3.2.0]heptan-6-ones.