New ketosteroids from the red alga Hypnea musciformis |
| |
| Authors: | Bultel-Poncé V Etahiri S Guyot M |
| |
| Affiliation: | Laboratoire de Chimie des Substances Naturelles associé au CNRS, Muséum National d'Histoire Naturelle, 63 rue Buffon, 75005 Paris, France. bultel@mnhn.fr |
| |
| Abstract: | The dichloromethane/methanol extract from the red alga Hypnea musciformis exhibited PPE elastase inhibition. A diketosteroid, the 20-hydroxy-5alpha-cholest-22-ene-3,6-dione was responsible for this activity. Two new steroids were isolated, 2 was assigned as the 6alpha-hydroxy-cholest-4-ene-3-one and 3 as the 6alpha-hydroxy-cholest-4,22-diene-3-one. The structures were assigned mainly on the basis of 1H and 13C NMR experiments. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect PubMed 等数据库收录！ |
|
