title: Ethyl-branched aldehydes, ketones, and diketones from caimans (Caiman and Paleosuchus; Crocodylia, Reptilia).
abstract: Secretions from the paracloacal glands of alligators (Alligator spp.) and caimans (Caiman spp., Melanosuchus niger, and Paleosuchus spp.) were examined by GC-MS. The secretions of the common caiman (C. crocodilus), the broad-snouted caiman (C. latirostris), the yacare caiman (C. yacare), the dwarf caiman (P. palpebrosus), and the smooth-fronted caiman (P. trigonatus) yielded a new family of 43 aliphatic carbonyl compounds that includes aldehydes, ketones, and beta-diketones with an ethyl branch adjacent to the carbonyl group. The identification of these glandular components and the syntheses and stereochemical investigations of selected compounds are described.
authors.affiliation: Institut für Organische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany.
authors.forename: Karsten
authors.initials: K
authors.lastname: Krückert
authors.forename: Birte
authors.initials: B
authors.lastname: Flachsbarth
authors.forename: Stefan
authors.initials: S
authors.lastname: Schulz
authors.forename: Ute
authors.initials: U
authors.lastname: Hentschel
authors.forename: Paul J
authors.initials: PJ
authors.lastname: Weldon
mesh_terms: D000447:Aldehydes / Q000737:chemistry* / Q000302:isolation & purification*; D000489:Alligators and Crocodiles; D000818:Animals; D001419:Bacteria / Q000302:isolation & purification; D005260:Female; D006801:Humans; D007659:Ketones / Q000737:chemistry* / Q000302:isolation & purification*; D008297:Male; D015394:Molecular Structure; D010675:Pheromones / Q000737:chemistry* / Q000302:isolation & purification*; D012543:Scent Glands / Q000737:chemistry* / Q000382:microbiology; D012867:Skin / Q000737:chemistry / Q000378:metabolism
chemical_list: D000447:Aldehydes; D007659:Ketones; D010675:Pheromones