80800-66-4Relevant articles and documents
Identification and Enantiodivergent Synthesis of (5 Z,9 S)-Tetradec-5-en-9-olide, a Queen-Specific Volatile of the Termite Silvestritermes minutus
Machara, Ale?,K?ivánek, Jan,Dolej?ová, Klára,Havlí?ková, Jana,Bednárová, Lucie,Hanus, Robert,Majer, Pavel,Kyjaková, Pavlína
, p. 2266 - 2274 (2018/10/20)
The queens of social insects differ from sterile colony members in many aspects of their physiology. Besides adaptations linked with their specialization for reproduction and extended lifespan, the queens also invest in the maintenance of their reproducti
Synthesis of prostaglandin and phytoprostane B1 via regioselective intermodular pauson-khand reactions
Vazquez-Romero, Ana,Cardenas, Lydia,Blasi, Emma,Verdaguer, Xavier,Riera, Antoni
scheme or table, p. 3104 - 3107 (2009/12/05)
A new approach to the synthesis of prostaglandin and phytoprostanes B 1 is described. The key step is an intermolecular Pauson-Khand reaction between a silyl-protected propargyl acetylene and ethylene. This reaction, promoted by NMO in the presence of 4 A molecular sieves, afforded the 3-fert-butyldimethylsilyloxymethyl-2-substituted-cyclopent-2-en-1- ones (III) in good yield and with complete regioselectivity. Deprotection of the silyl ether, followed by Swern oxidation, gave 3-formyl-2-substituted- cyclopent-2-en-1-ones (II). Julia olefination of the aldehydes II with the suitable chiral sulfone enabled preparation of PPB1 type I and PGB1.
Fluorine-containing optically active compound and liquid crystal composition containing the same
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, (2008/06/13)
A fluorine-containing optically active compound represented by formula (I): STR1 wherein R1 represents a straight chain alkyl or alkoxy group having from 6 to 14 carbon atoms or a 4-alkylphenyl or 4-alkoxyphenyl group having from 8 to 12 carbon