1. 1) Goto, K., and Takebe, T.,: Proc. Imp. Acad., 9, 390 (1933).
2. 2) Prepared after M. Gates (J. Amer. Chem. Soc., 76,1380 (1956)). Compare the direct method from sinomenine (Proc. Japan Acad., 33, 477 (1957)).
3. 3) Sanuki, K., and Ohno, H.,: Acta Med. Okayama, 10, 89 (1956).
4. 4) Woolfe, G., and Macdonald, A. D.,: J. Pharmacol., 80, 300 (1944),
5. 5) Haffner, F.,: Dtsch. med. Wschr., 55, 731 (1929).