✦ LIBER ✦
Cynaratriol, ein neues Guajanolid aus der Kardone Cynara cardunculusL. und der Artischocke C. scolymusL.(Compositate)
✍ Scribed by Heinz O. Bernhard; Kurt Thiele; Ernö Pretsch
- Publisher
- John Wiley and Sons
- Year
- 1979
- Tongue
- German
- Weight
- 489 KB
- Volume
- 62
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Cynaratriol, a new guajanolide from Cynara cardunculus L. and C. scolymus L. (Compositae)
A new guajanolide given the name cynaratriol (4) was isolated from the leaves of Cynara cardunculus L The structure of 4 and its derivatives 3, 11, 13‐triacetylcynaratriol (5) and 3, 13‐dibenzoyl‐cynaratriol (6) was deduced on the basis of IR.‐, ^1^H‐NMR.‐, ^13^C‐NMR.‐ and mass spectroscopic data. 4 is also present in C. Scolymus L. as shown by GC./MS. analysis. The same absolute configuration is suggested for 4 as found for all other Cynara sesquiterpenes.