Cinnamomum japonicum

Both CIS- and trans-p-mentha-l(7),5-dien-2-ol (144) are reported from the essential oil of Cinnamomum japonicum Sieb. and called yabunikkeols (from the Japanese name of the plant) but the structures are unsupported by n.m.r. data. 

Recently, new compounds having particular sensory properties have been discovered as trace components in flavors. Four new alcohols (58) to (61) were reported to be components of the oil of black pepper, Piper nigrum L. however, the true principles of pepper flavor still remain unknown 106). The isopropenyl derivative of (59) [l,8-/ -mentha-dien-5-ol 445)] has also been found in nature 232). The phellandrene derivative (57) was found in angelica root oil for the first time in nature 627). The structures (60) and (62) were assigned tentatively to two further constituents of the same oil 627). Both diastereoisomers of (60) had previously been reported to occur in Cinnamomum japonicum Sieb. 173). 

Fujita, Y., S. Fujita, and H. Yoshikawa trans- and cw-Yabunikkeol, new Mono-terpene Alcohols Isolated from the Essential Oils of Cinnamomum japonicum. Bull. Chem. Soc. Japan 43, 1599 (1970). 

Fujita Y, Fujita S, Yoshikawa H 1970 trans- and cis-Yabunikkeol, new monoterpene alcohols isolated from the essential oils of Cinnamomum japonicum Sieb. Bull Chem Soc Jpn 43 1599... 

A. lagocephala, A. lavandulaefolia, A. scoparia, A. selengensis, A. sieversiana, A. vulgaris, Melaleuca leucadendra Cinnamomum camphora Euchresta japonicum... 

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