title: Cembrene A and a congeneric ketone isolated from the paracloacal glands of the Chinese alligator (Alligator sinensis).
abstract: A diterpene hydrocarbon and diterpene ketone isolated from the paracloacal gland secretions of the Chinese alligator (alligator sinensis) were examined by GC-MS and 1H-NMR, 13C-NMR, and IR spectroscopy, and identified as 4,8,12-trimethyl-1-(1-methylethenyl)-3,7,11-cyclotetradecatrien e (cembrene A, 1) and its congeneric ketone, 4,8,12-trimethyl-1-(1-methylethenyl)-3,7-cyclotetradecadien- 10-one (2), respectively. This is the first report of cembrene A from a vertebrate; the ketone has not been described previously.
authors.affiliation: Department of Chemistry, University of Mississippi 38677, USA.
authors.forename: D L
authors.initials: DL
authors.lastname: Mattern
authors.forename: W D
authors.initials: WD
authors.lastname: Scott
authors.forename: C A
authors.initials: CA
authors.lastname: McDaniel
authors.forename: P J
authors.initials: PJ
authors.lastname: Weldon
authors.forename: D E
authors.initials: DE
authors.lastname: Graves
mesh_terms: D000489:Alligators and Crocodiles; D000818:Animals; D002988:Cloaca; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D008401:Gas Chromatography-Mass Spectrometry; D007659:Ketones / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D012543:Scent Glands / Q000737:chemistry*; D013055:Spectrophotometry, Infrared
chemical_list: D004224:Diterpenes; D007659:Ketones; C108204:cembrene A