References
- Dehmen , J. , Leander , K. and Rosenblom , J. 1975 . Acta Chem. Scand. , B29 : 627 – 628 .
- Talapatra , S. K. , Bose , S. , Mallik , A. K. and Talapatra , B. 1984 . J. Indian Chem. Soc. , 61 ( 12 ) : 1010 – 1012 .
- Ahmad , V. U. and Rahman , A. 1994 . Handbook of Natural Products Data: Pentacyclic Triterpenoids Vol. 2 , 563 – 564 .
- Fred Mclafferty , W. and Douglas Stauffer , B. The Wiley/NBS Registry of Mass Spectral Data. , Vol. 1 90481
- Majumder , P. L. and Chakraborti , J. 1989 . J. Indian Chem. Soc. , 66 ( 11 ) : 834 – 837 .
- Talapatra , S. K. , Chakraborty , S. , Bose , S. and Talapatra , B. 1988 . Indian J. Chem. , 27B : 250 – 252 .
- Talapatra , B. , Das , A. K. and Talapatra , S. K. 1989 . Phytochemistry , 28 ( 1 ) : 290 – 292 .