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  • Title: Cucurbitosides F-M, acylated phenolic glycosides from the seeds of Cucurbita pepo.
    Author: Li W, Koike K, Tatsuzaki M, Koide A, Nikaido T.
    Journal: J Nat Prod; 2005 Dec; 68(12):1754-7. PubMed ID: 16378368.
    Abstract:
    Eight new phenolic glycosides, cucurbitosides F-M (1-8), were isolated from the seeds of Cucurbita pepo. Their structures were elucidated as 4-(2-hydroxyethyl)phenyl 5-O-(2-S-2-methylbutyryl)-beta-d-apiofuranosyl(l-->2)-beta-d-glucopyranoside (1), 4-(2-hydroxyethyl)phenyl 5-O-(3-methylbutyryl)-beta-d-apiofuranosyl(l-->2)-beta-d-glucopyranoside (2), 4-(2-hydroxyethyl)phenyl 5-O-nicotinyl-beta-d-apiofuranosyl(l-->2)-beta-d-glucopyranoside (3), 4-(2-hydroxyethyl)phenyl 5-O-(4-aminobenzoyl)-beta-d-apiofuranosyl(l-->2)-beta-d-glucopyranoside (4), 4-(2-hydroxyethyl)-2-methoxyphenyl 5-O-(2-S-2-methylbutyryl)-beta-d-apiofuranosyl(l-->2)-beta-d-glucopyranoside (5), 4-(hydroxymethyl)phenyl 5-O-(2-S-2-methylbutyryl)-beta-d-apiofuranosyl(l-->2)-beta-d-glucopyranoside (6), 4-(hydroxymethyl)phenyl 5-O-nicotinyl-beta-d-apiofuranosyl(l-->2)-beta-d-glucopyranoside (7), and 4-(hydroxymethyl)phenyl 5-O-(4-aminobenzoyl)-beta-d-apiofuranosyl(l-->2)-beta-d-glucopyranoside (8) on the basis of various spectroscopic analyses and analyses of hydrolysis products.
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