Absolute Configuration of Solenopsis Piperidines is a Tool to Classify Fire Ants (Formicidae:Myrmicinae)
摘要:
Piperidine alkaloids are predominant in ant venom glands of S. invicta and S. saevissima. These ants are broadly sympatric in Southeastern Brazil, and potentially diagnostic compounds could assist in ant identification. We determined the absolute configuration of 2,6-dialkyl-piperidines of S. invicta and S. saevissima workers and used these data to group Southeastern Brazil species. The monitoring of venom samples by chiral gas chromatography coupled to a flame ionization detector (GC-FID) revealed that S. saevissima produces the four stereoisomers of 2-methyl-6-undecylpiperidines, 2-methyl-6-tridecyl-piperidines and 2-methyl-6-tridecenyl-piperidines, while S. invicta venom consisted primarily of a single enantiomer cis and trans from each piperidine alkaloid. Our findings showed that the absolute configuration of piperidine alkaloids of fire ant venom may be a potential chemical tool to distinguish S. invicta and S. saevissima sympatric species in Southeastern Brazil.
作者:Adriana Pianaro、Eduardo G.P. Fox、Odair C. Bueno、Anita J. Marsaioli
DOI:10.1016/j.tetasy.2012.05.005
日期:2012.5
A protocol for rapid access to the relative and absolute configurations of the solenopsins, the venomalkaloids of fireants (Solenopsis spp.), was developed based on chiral capillary gas chromatography. The synthesis of racemic mixtures of 2-methyl-6-alkylpiperidines and the isolation of natural (2R,6R)- and (2R,6S)-2-methyl-6-undecylpiperidines allowed for the standardization of the chromatographic
SOLENOPSIN AND DERIVATIVES, THERAPEUTIC COMPOSITIONS, AND METHODS RELATED THERETO
申请人:Arbiser Jack L.
公开号:US20140335079A1
公开(公告)日:2014-11-13
This disclosure relates to solenopsin derivatives, pharmaceutical compositions, and therapeutic uses related thereto. In certain embodiments, the disclosure relates to compounds of the following formula:
or salts, esters or prodrugs thereof as described herein.
Solenopsin a, b and analogs and as novel angiogenesis inhibitors
申请人:Bowen Phillip J.
公开号:US20050038071A1
公开(公告)日:2005-02-17
The present invention relates to solenopsin A and its analogs for use as angiogenesis inhibitors. The present compounds unexpectedly exhibit good activity as angiogenesis inhibitors, which find use as antitumor/anticancer agents as well as to treat a number of conditions or disease states in which angiogenesis is a factor.