Isolation and Structures of New Cyclomyltaylane and ent-Chamigrane-Type Sesquiterpenoids from the Liverwort Reboulia hemishaerica and Their Biotransformation by the Fungus Aspergillus niger
| Autor: | Yoshinori Asakawa, Yoshiaki Noma, Toshihiro Hashimoto, Mai Furusawa |
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| Rok vydání: | 2006 |
| Předmět: |
Hepatophyta
Magnetic Resonance Spectroscopy Molecular Structure biology Chemistry Stereochemistry Aspergillus niger General Chemistry General Medicine Nuclear magnetic resonance spectroscopy Fungus Crystallography X-Ray Isolation (microbiology) biology.organism_classification Terpene Reboulia hemisphaerica Type (biology) Biotransformation Botany Drug Discovery Sesquiterpenes |
| Zdroj: | Chemical and Pharmaceutical Bulletin. 54:996-1003 |
| ISSN: | 1347-5223 0009-2363 |
| DOI: | 10.1248/cpb.54.996 |
| Popis: | Reboulia hemisphaerica, the thalloid liverwort, contained four new cyclomyltaylane- and two new ent-beta-chamigrane-type sesquiterpenoids of which the absolute stereostructures were established by a combination of two-dimensional NMR spectroscopy, X-ray crystallographic analysis, and the modified Mosher's method. Cyclomyltaylan-5alpha-ol and ent-beta-chamigren-1alpha-ol were biotransformed by the fungus Aspergillus niger to afford new oxygenated matabolites. Their structures were also elucidated in the same manner as described above. |
| Databáze: | OpenAIRE |
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