Singh, Parvinder Pal and Qazi, Naveed Ahmed and Shafi, Syed and Reddy, D. Mahendhar and Banday, Abid H. and Reddy, P. Bhaskar and Suri, K.A. and Gupta, B.D. and Satti, N.K. and Wakhloo, Basant P. and Kumar, H.M. Sampath and Qazi, G.N. (2009) Regio-selective acylation of biologically important iridoid glycosides by Candida antarctica lipase. Journal of Molecular Catalysis B: Enzymatic, 56 (1). pp. 46-54. ISSN 13811177

PDF - Published Version Restricted to Registered users only Download (754Kb) | Request a copy

Abstract

Lipase catalyzed regio-selective acylation of five iridoid glycosides viz., picroside I&II, catalpol, agnuside and negundoside in the presence of various acyl donors such as vinyl acetate and p-nitrophenyl alkanoates was studied. The regio-selectivity of enzymatic acylation and yieldswere found to vary amongst different substrates. Monoacylated products were isolated with all the substrates under scrutiny indicating high regio-selective nature of such transformations. A series of acyl esters of picroside-I, picroside-II, catalpol, agnuside and negundoside have been synthesized by this enzymatic trans-esterification methodology.

Item Type:	Article
Subjects:	Chemical Sciences
Divisions:	UNSPECIFIED
Depositing User:	Mr. Amit Nargotra
Date Deposited:	02 Jan 2012 12:08
Last Modified:	02 Jan 2012 12:08
URI:	http://iiim.csircentral.net/id/eprint/331

Actions (login required)

View Item