✦ LIBER ✦
Isobharangin, a new biogenetically significant diterpenoid quinonemethide from pygmacopremna herbacea (Roxb.) moldenke
✍ Scribed by A.V.B. Sankaram; K. Bhaskaraiah; M. Marthandamurthi; M. Subrahmanyam
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- French
- Weight
- 166 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
Isobharangin isolated from the hexane extract of the root nodules of the Ayurvedic drug, Pygmacopremna herbacea (Roxb) Moldenke has been shown to be 3B(R),ll-dihydroxy-5,7,9,13abietatetraene-2,12-dione (1) unequivocally from a consideration of its mass spectrum, UV, IR, 1 H NMR and CD spectra, long range couplings in its 13 C NMR spectrum and its 2D NOESY spectrum.