104758-89-6Relevant articles and documents
SELECTIVE LIPASE-CATALYZED ACYLATION OF 4,6-O-BENZYLIDENE-D-GLUCOPYRANOSIDES TO SYNTHETICALLY USEFUL ESTERS
Panza, Luigi,Brasca, Sara,Riva, Sergio,Russo, Giovanni
, p. 931 - 932 (1993)
Simple and regioselective lipase-catalyzed acylation of compounds 1 and 4 with synthetically useful esters such as benzoates, chloroacetates, pivaloates and levulinates is described.
Wittig Reaction: Domino Olefination and Stereoselectivity DFT Study. Synthesis of the Miharamycins' Bicyclic Sugar Moiety
Cachatra, Vasco,Almeida, Andreia,Sardinha, Jo?o,Lucas, Susana D.,Gomes, Ana,Vaz, Pedro D.,Florêncio, M. Helena,Nunes, Rafael,Vila-Vi?osa, Diogo,Calhorda, Maria José,Rauter, Amélia P.
, p. 5622 - 5625 (2015/12/01)
2-O-Acyl protected-d-ribo-3-uloses reacted with [(ethoxycarbonyl)methylene]triphenylphosphorane in acetonitrile to afford regio- and stereoselectively 2-(Z)-alkenes in 10-60 min under microwave irradiation. This domino reaction is proposed to proceed via tautomerization of 3-ulose to enol, acyl migration, tautomerization to the 3-O-acyl-2-ulose, and Wittig reaction. Alternatively, in chloroform, regioselective 3-olefination of 2-O-pivaloyl-3-uloses gave (E)-alkenes, key precursors for the miharamycins' bicyclic sugar moiety.
Regioselective Acylation of Hexopyranosides with Pivaloyl Chloride
Jiang, Lu,Chan, Tak-Hang
, p. 6035 - 6038 (2007/10/03)
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