Pseudomonas ovalis reduction

A Pseudomonas strain hydroxylates p-menthane to cis-p-menthan-l-ol,84 and microbiological reduction of carvotanacetone with Pseudomonas ovalis gives similar results85 to those obtained with carvone (Vol. 5, p. 24, incorrectly reports inversion at C-4). (—)-Carvotanacetone (30) gives (+)-carvomenthone (31), (—)-... 

Both naturally occurring enantiomers of carvone were selectively reduced by B. sulfurescens (Scheme 71). (-)-Carvone was reduced to (-h)-dihydrocarvone (trans) and further to (-H)-neodihydrocarveol, whereas (-i-)-carvone was reduced to (-)-isodihydrocarvone (cis), which was then converted to (-)-neo-isodihydrocarveol. Similar reductions with identical stereoselectivities were observed earlier with Pseudomonas ovalis (strain 6-1) and with a strain of Aspergillus niger. ... 

Noma, Y., 1977. Conversion of the analogues of carvone and dihydrocarvone by Pseudomonas ovalis, strain 6-1, Biochemical reduction of terpenes, part VII. 463-470. 

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