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In this short review of spermine and spermidine plant alkaloids, which are characterized by the presence of a macrocyclic Iactam ring, special consideration has been given to the alkaloids from Oncinotis species and to the spermine alkaloid, chaenorrhine.H 2 N--(CH 2 ) 4 -NH 2 1, Putrescine M. M. BADA WI ET AL.H H 2 N---(CH 2 h-N-(CH 2 ) 4 -NH 2 2, Spermidine H H H 2 N---(CH 2 h-N-(CH 2 ) 4 -N---(CH 2 h-NHz 3, Spermine H H 2 N---(CH 2 ) 4 -N---(CH 2 ) 4 -NH 2 4, sym.-Homospermidine (CH 3 )zN---(CHz)4 ~
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Badawi et al. (1973) studied this question.
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