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Titolo:
ROLE OF CAFFEIC GLUCOSIDE ESTERS IN DEFENSE-REPAIR PROCESSING OF TREES .1. SYNTHESIS OF THE PARTIAL STRUCTURE OF ACTEOSIDE, 2-(3,4-DIHYDROXYPHENYL)-ETHYL BETA-D-GLUCOPYRANOSIDE, AND PEROXIDASE-CATALYZED OXIDATION
Autore:
OTA M; AZUMA T; OHIRA M; ABE K; KOFUJITA H;
Indirizzi:
IWATE UNIV,FAC AGR MORIOKA IWATE 020 JAPAN
Titolo Testata:
Mokuzai Gakkaishi
fascicolo: 3, volume: 43, anno: 1997,
pagine: 260 - 267
SICI:
0021-4795(1997)43:3<260:ROCGEI>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
PAULOWNIA-TOMENTOSA STEUD; CELL-WALL; COLOR CHANGES; FERULIC ACID; KIRI WOOD; XYLEM; CHEMISTRY;
Keywords:
CAFFEIC GLUCOSIDE ESTERS; DEFENSE-REPAIR PROCESSING; ENZYMATIC OXIDATION; SYNTHESIS; 2-(3,4-DIHYDROXYPHENYL)-ETHYL BETA-D-GLUCOPYRANOSIDE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
37
Recensione:
Indirizzi per estratti:
Citazione:
M. Ota et al., "ROLE OF CAFFEIC GLUCOSIDE ESTERS IN DEFENSE-REPAIR PROCESSING OF TREES .1. SYNTHESIS OF THE PARTIAL STRUCTURE OF ACTEOSIDE, 2-(3,4-DIHYDROXYPHENYL)-ETHYL BETA-D-GLUCOPYRANOSIDE, AND PEROXIDASE-CATALYZED OXIDATION", Mokuzai Gakkaishi, 43(3), 1997, pp. 260-267

Abstract

Caffeic glucoside esters in trees can play a physiological role in the defense-repair processing of wounded tissues. To provide in vitro evidence for this explanation, enzymatic oxidation of three caffeic glucoside esters with a synthetic component of them, 2-(3,4-dihydroxyphenyl)-ethyl beta-D-glucopyranoside (Compound 9) was examined. The difference spectra showed that o-quinones were formed, followed by a conversion to condensed substances, Acteoside resulted in a brown substance precipitated in the peroxidase-catalyzed oxidation, yielding 22- to 89-%under different incubation conditions. It hardly was soluble in various polar solvents. For Compound 9, observable precipitation did not occur. It was inferred to have sugar moieties in its condensed structure. Both or one of the caffeoyl moieties and the rhamnosyl one likely may be required to cause precipitable substances. An intervention of radical couplings among constitutive moieties of it is discussed. Compound 9 was identical with the natural specimen.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 19:52:02