Head-space volatiles obtained from male mountain pine beetles, Dendroctonus ponderosae, were analyzed by coupled GC-MS and chiral gas chromatography. 5-Ethyl-7-methyl-6,8-dioxabicyclo[3.2.1]octane (6) was found as a new naturally occurring isomer of brevicomin (1). In addition, several stereoisomers of 7-ethyl-5-methyl-6,8-dioxabicyclo[3.2.1]octan-2-ol (11) and
J.C. Stowell et al.
Organic Syntheses, 62, 140-140 (1984)
The Total synthesis of (+)-artemisinin and (+)-9-desmethyltemesinin.
Avery MA, et al.
Tetrahedron Letters, 28(4), 4629-4632 (1987)
Reductive Cyclization of (3-) and (4-Oxoalkyl)-9, 10-anthraquinones to the cyclopenta [a] anthraquinone and naphthacene-5, 12-dione systems.
Krohn K and Bernhard S.
J. Prakt. Chem./Chem.-Ztg., 340(1), 26-33 (1998)
B.B. Snider et al.
The Journal of Organic Chemistry, 49, 153-153 (1984)
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