Viverra civetta

Civet civetone / polyket. Q ° civetone civet cat, Civettictis [= Viverra] civetta (Schreber, 1776), Mamm./fixative in expensive perfumery trtal synthesis... 

Another example of the reduction of chloroketone is the reduction of 5-chloro-2-pentanone by TBADH as shown in Fig. 15-38 19. Using this biotransformation in the synthetic pathway, a naturally occurring heterocycle isolated from the glandular secretion of the dvet cat (Viverra civetta), was prepared. 

The absolute configuration, i.e. S,S), of a tetrahydropyran (17) that is present in civet Viverra civetta) has been determined, using a chiral shift reagent [Eu(hfc)3] and 360 MHz n.m.r. spectroscopy in comparison with a synthetic sample of (+)-(5,5)-(17) and its methyl ester.X-Ray analysis was applied to the determination of the conformation of the violet form of cunaniol acetate (18), which was shown to have an undistorted chair form with both substituents equatorial. An e.p.r. spectral study has shown that the radical which is formed from several stereoisomeric 2,4-disubstituted tetrahydropyrans is the same, namely the cis-2-alkoxy-4-methyltetrahydropyran-2-yl radical. 

Definition Derived from civet cats, Viverra civetta and V. zibetha... 

Intramolecular oxyanion conjugate addition has also been applied to the stereoselective synthesis of cw-2,6-disubstituted tetrahydropyrans by Mandai [59]. Of particular interest was an application to the enantioselective synthesis of (cis-6-methyltetrahydropyran-2-yl) acetic acids such as (+)-(83a) and (-)-(83b). These naturally occurring compounds have been isolated from the glandular secretions of the civet cat Viverra civetta). 

The civet cat Viverra civetta] is the originai source of civetone, a sweet and pungent ketone, now produced syntheticaiiy and used as a fixative in perfumery. 

This simple, but unusual cycloalkenone is called civetone, as it is isolated from a gland present in both male and female civet cats, Viverra civetta and Viverra zibetha. The cats use it as a sexual attractant and marking agent. It has a strong musky odor, overwhelming when concentrated (to humans, that is, probably not to civet cats). In high dilution the odor becomes quite pleasant, and civetone and the... 

Source Viverra civetta Schreber (syn. Ci-vettictis civetta Schreber), V.zibetha L., and other related species (Family Viverridae). 

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