LC-MS ANALYSIS AND STRUCTURAL DETERMINATION OF NEW AMIDES FROM JAVANESE LONG PEPPER (PIPER-RETROFRACTUM)

Authors
KIKUZAKI H KAWABATA M ISHIDA E AKAZAWA Y TAKEI Y NAKATANI N
Citation
H. Kikuzaki et al., LC-MS ANALYSIS AND STRUCTURAL DETERMINATION OF NEW AMIDES FROM JAVANESE LONG PEPPER (PIPER-RETROFRACTUM), Bioscience, biotechnology, and biochemistry, 57(8), 1993, pp. 1329-1333
Citations number
17
Categorie Soggetti
Biology,Agriculture,"Biothechnology & Applied Migrobiology","Food Science & Tenology
Journal title
Bioscience, biotechnology, and biochemistry → ACNP
ISSN journal
09168451
Volume
57
Issue
8
Year of publication
1993
Pages
1329 - 1333
Database
ISI
SICI code
0916-8451(1993)57:8<1329:LAASDO>2.0.ZU;2-7
Abstract
Amides in a CH2Cl2 extract from the fruits of Piper retrofractum were detected by HPLC/APCI-MS. Seven new unsaturated amides, together with six known ones, were isolated, and their structures were determined to be N-isobutyl-2E,4E,12Z-octadecatrienamide (1), N-isobutyl-2E,4E,14Z- eicosatrienamide (2), 1-(octadeca-2E,4E,12Z-trienoyl)piperidine (3), 1 -(eicosa-2E,4E,14Z-trienoyl)piperidine (4), 1-(octadeca-2E,4E-dienoyl) piperidine (5), 1-(eicosa-2E,4E-dienoyl)piperidine (6), and 1-(eicosa- 2E,14Z-dienoyl)piperidine (7) on the basis of chemical and spectroscop ic evidence.