Ethyl-Branched Aldehydes, Ketones, and Diketones from Caimans (Caiman and Paleosuchus; Crocodylia, Reptilia)
摘要:
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 broadsnouted 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.
Palladium(ii)- and platinum(ii)-catalyzed addition of stabilized carbon nucleophiles to ethylene and propyleneElectronic supplementary information (ESI) available: experimental procedures, analytical and spectroscopic data for new compounds. See http://www.rsc.org/suppdata/cc/b3/b316734h/
作者:Xiang Wang、Ross A. Widenhoefer
DOI:10.1039/b316734h
日期:——
PdCl(2)(CH(3)CN)(2) and [PtCl(2)(H(2)C[double bond]CH(2))](2) catalyze the addition of beta-dicarbonyl compounds to ethylene and propylene.
Ethyl-Branched Aldehydes, Ketones, and Diketones from Caimans (<i>Caiman</i> and <i>Paleosuchus</i>; Crocodylia, Reptilia)
作者:Karsten Krückert、Birte Flachsbarth、Stefan Schulz、Ute Hentschel、Paul J. Weldon
DOI:10.1021/np0600797
日期:2006.6.1
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 broadsnouted 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.