Strychnos subcordata

Strychnos splendens Gilg Strychnos subcordata Spruce Strychnos tieute Lesch. 

All dimeric curare alkaloids are derived from the monomeric units Wieland-Gumlich aldehyde (32) and 18-desoxy-Wieland-Gumlich aldehyde (34) or their respective iV(j,)-metho-salts (33) and (35). The key substance for the synthesis of the dimeric calabash alkaloids is therefore Wieland-Gumlich aldehyde (32). Under the name caracurine VII it has been isolated from the South American Strychnos toxifera F. Schomb. and S. subcordata Spruce in the form of its V(j,)-metho-salt (= alkaloid 8 = hemitoxiferine = caracurine VII metho-salt). 

Stephania harnandifolica Tridisia subcordata Strychnos toxifera Papaver somniferum... 

On heating at 60°C with concentrated hydrochloric acid for 5 hours, curarine breaks down to, among other things, fluorocurarine (2f), a frequent component of the alkaloid mixtures in Strychnos species, e.g. S. trinervis, S. solimoesana, S. subcordata, S. tomentosa, etc. 

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See also in sourсe #XX -- [ ]

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