• Keine Ergebnisse gefunden

Microbial Hydroxylation and Reduction of the Diterpene Psiadin

N/A
N/A
Info
Herunterladen
Protected

Academic year: 2022

Aktie "Microbial Hydroxylation and Reduction of the Diterpene Psiadin"

Copied!
1
0
0

Wird geladen.... (Jetzt Volltext ansehen)

Jetzt herunterladen ( 1 Seite )

Volltext

(1)

Microbial Hydroxylation and Reduction of the Diterpene Psiadin

Khaled Y. Orabi*

,a

, Ahmed M. Galal

‡

, Abdel-Rahim S. Ibrahim

§

, Farouk S. El-Feraly

a

, and AndrewT. McPhail

b

a Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia. Fax: (966)-1-467-7245. E-mail: kyorabi@ksu.edu.sa

b Department of Chemistry, Paul M. Gross Chemical Laboratory, Duke University, Durham, North Carolina 27708Ð0346, U.S.A.

* Author for correspondence and reprint requests

Z. Naturforsch.56 c,216Ð222 (2001); received October 4/November 10, 2000 Psiadin, Microbial Bioconversion, 2α-Hydroxydeoxopsiadin

Microbial bioconversion studies conducted on the diterpene psiadin have revealed that it was metabolized byAspergillus niger(NRRL 2295) to give 2α-hydroxydeoxopsiadin,Cunnin- ghamella blakesleeana (ATCC 8688a) to give 11β-hydroxypsiadin, and Cylindrocephalum aureum (ATCC 12720), Gongronella butleri (ATCC 22822), Kloeckera africana (ATCC 20111), andKluyveromyces marxianus var. lactis(ATCC 2628) to yield 7α-hydroxypsiadin.

Their structures have been established on the basis of spectral data. The structure and rela- tive stereochemistry of 7α-hydroxypsiadin was confirmed by single-crystal X-ray analysis.

Referenzen

Jetzt herunterladen ( PDF - 1 Seite - 24.20 KB )

ÄHNLICHE DOKUMENTE

Field and greenhouse trials to study the effects of microbial inoculants on wheat performance

Pseudomonas protegens CHA0 has been inoculated in three different soil substrates to observe induce resistance of wheat to brown rust (Puccinia triticina)..

JAANIS JUHANSON Impact of phytoremediation and bioaugmentation on the microbial

Shannon diversity indexes based on the DGGE fingerprints did not demonstrate substantial differences between untreated and treated plots and these values remained relatively stable

Influence of Culture Conditions on the Biotransformation of (+++)-Limonene by Aspergillus niger

mation products of limonene have been reported for different fungal growth media (Adams et al., 2003; Bi- cas et al., 2008; Badee et al., 2011).. A more recent report noted that

Microbial Transformations of 6- and 7-Methoxyfl avones in Aspergillus niger and Penicillium chermesinum Cultures

Edyta Kostrzewa-Susłow a, *, Jadwiga Dmochowska-Gładysz a , Tomasz Janeczko a , Kamila ĝroda b , Krystyna Michalak b , and Anna Palko b.. a Department of Chemistry,

Microbial Transformations of 6- and 7-Methoxyfl avones in Aspergillus niger and Penicillium chermesinum Cultures

niger KB culture – yield (%) of products determined by HPLC (substrate added at the time of

Inhibition and Uncoupling of Photosynthetic Electron Transport by Diterpene Lactone Amide Derivatives

a Departamento de Quı´mica, ICE, Instituto de Cieˆncias Biolo´gicas, Universidade Federal de Minas Gerais, Avenida Presidente Antonio Carlos, 6627, Pampulha, CEP 31270-901,

by Diterpene Lactone Amide Derivatives

To determine the target where the diterpene lac- tone amide derivatives inhibit the chloroplasts electron transport chain, the activity on uncoupled PSII (photosystem II) and

Biotransformation of Jatrophone by Aspergillus niger ATCC 16404 Mariano Pertino

Microbial transformation of the diterpene jatro- phone by Aspergillus niger afforded a main compound ( 2 ) (Fig.. Under our experi- mental conditions, neither Mortierella