NMR SPECTROSCOPIC STUDY OF THE FORMATION OF BORATE ESTERS ASCORBIC-ACID AND ISOASCORBIC ACID

Authors
OBI N KATAYAMA M SANO J KOJIMA Y SHIGEMITSU Y TAKADA B
Citation
N. Obi et al., NMR SPECTROSCOPIC STUDY OF THE FORMATION OF BORATE ESTERS ASCORBIC-ACID AND ISOASCORBIC ACID, New journal of chemistry, 22(9), 1998, pp. 933-934
Citations number
28
Categorie Soggetti
Chemistry
Journal title
New journal of chemistry → ACNP
ISSN journal
11440546
Volume
22
Issue
9
Year of publication
1998
Pages
933 - 934
Database
ISI
SICI code
1144-0546(1998)22:9<933:NSSOTF>2.0.ZU;2-C
Abstract
The favorable positions for berate ester formation of ascorbic acid ar e 3,5-OH groups which yields a 6-membered ring, even though B-13 NMR c hemical shifts of the berate ester of ascorbic acid suggested the exis tence of a 5-membered ring.