Synthesis 2012; 44(7): 1102-1108
DOI: 10.1055/s-0031-1290489
paper
© Georg Thieme Verlag Stuttgart · New York

Enantiodivergent Syntheses of Pantolactone and Pantothenic Acid from d-Mannitol

Ishita Sanyal
Department of Chemistry, CSIR–Indian Institute of Chemical Biology, 4 Raja S.C. Mullick Road, Jadavpur, Kolkata 700032, India, Fax: +91(33)24735197   Email: ashisbanerjee@iicb.res.in
,
Piyali Deb Barman
Department of Chemistry, CSIR–Indian Institute of Chemical Biology, 4 Raja S.C. Mullick Road, Jadavpur, Kolkata 700032, India, Fax: +91(33)24735197   Email: ashisbanerjee@iicb.res.in
,
Asish Kumar Banerjee*
Department of Chemistry, CSIR–Indian Institute of Chemical Biology, 4 Raja S.C. Mullick Road, Jadavpur, Kolkata 700032, India, Fax: +91(33)24735197   Email: ashisbanerjee@iicb.res.in
› Author Affiliations
Further Information

Publication History

Received: 26 December 2011

Accepted after revision: 09 February 2012

Publication Date:
05 March 2012 (online)


Abstract

Efficient synthetic routes to both the enantiomers of pantolactone and pantothenic acid have been developed starting from d-mannitol-based d-glyceraldehyde acetonide through its conversion into a protected pantoic acid intermediate followed by either cyclization or amide bond formation with a β-amino ester, and subsequent appropriate deprotection.