References
- Bu'Lock , J. D. and Walker , D. C. 1967 . J. Chem. Soc. (c) , 5 : 336 – 338 .
- Joan Winters , H. and Walker , D. C. 1961 . Econ. Bot. , 14 : 225 – 231 .
- Kier Lemont , B. 1960 . J. Pharm. Sci. , 50 : 471 – 474 .
- Sakuma , Kazuo . JP Patent, Appl. 93/159946, 6 . 1993 .
- Knight , S. A. 1974 . Org. Magn. Res. , 6 : 603
- Takaaki , Tai and Tai . 1993 . Phytochemistry , 32 : 1239 – 1244 .
- Kirsti , Kahlos and Raimo , Hiltunen . 1986 . Acta Pharm. Fenn. , 95 : 71 – 76 .