Three New Lanostane Triterpenoids,Inonotsutriols A,B, and C,from Inonotus obliquus |
| |
| Authors: | Sayaka Taji Takeshi Yamada Reiko Tanaka |
| |
| Institution: | 1. Department of Medicinal Chemistry, Osaka University of Pharmaceutical Sciences, 4‐20‐1 Nasahara, Takatsuki, Osaka 569‐1094, Japan, (phone: +81‐72‐690‐1084;2. fax: +81‐72‐690‐1084) |
| |
| Abstract: | Three new lanostane‐type triterpenoids, inonotsutriols A ( 1 ), B ( 2 ), and C ( 3 ) were isolated from the sclerotia of Inonotus obliquus (Pers .: Fr.) (Japanese name: kabanoanatake; Russian name: chaga). Their structures were determined to be (3β,21R,24S)‐21,24‐cyclolanost‐8‐ene‐3,21,25‐triol ( 1 ), (3β,21R,24R)‐21,24‐cyclolanost‐8‐ene‐3,21,25‐triol ( 2 ), and (3β,21R,24S)‐21,24‐cyclolanosta‐7,9(11)‐diene‐3,21,25‐triol ( 3 ) on the basis of NMR spectroscopy including 1D and 2D experiments (1H,1H‐COSY, NOESY, HMQC, and HMBC) and EI‐MS. |
| |
| Keywords: | Inonotus obliquus Triterpenoids Lanostane triterpenoids Inonotsutriols A – C |
|
|
