A tetrahydroisoquinoline alkaloid, brunsvigine has been obtained from Brunsvigia
cooperii. It crystallizes from H20 and colourless crystals and has the structure given
above which has been confirmed by X-ray analysis.
Dry et ai., J. Chern. Soc., 4701 (1958)
Inubushietai.,l. Org. Chern., 25, 2153 (1960)
