CYANOGENETIC SUBSTANCES 



183 



(3) 



A group of several closely related substances, also related 

 to the two types illustrated above, have the basic struc- 

 ture phenyglycolonitrile D-glucoside-/S. 



OH 



(a) Prunasine (L-phenyl) from many Rosaceae, some 

 Myoporaceae {Eremophila maculata), Myrtaceae 

 {Eucalyptus corynocalix) and Scrophulariaceae 

 {Linaria striata and Choenorrhinum minus). 



(b) Prulauroside (L-D-phenyl) from species of Rosaceae. 



(c) Sambunigroside (D-phenyl) from Sambucus nigra 

 (Caprifoliaceae), Acacia glaucescens (Leguminosae) 

 and Ximenia americana (Oleaceae). 



(d) Dhurroside, a para-OH phenyl analog of prunasine, 

 found in Sorghum vulgare (Gramineae). 



(e) Phyllanthoside (may be same as dhurroside) found in 

 Euphorbiaceae {Phyllanthus gastroemii). 



(f) Zierioside, a meta-OH phenyl analog of prunasine 

 found in Rutaceae (Zieria laevigata). 



(4) Linamaroside, from several legumes and others, including 

 several species of Dimorphotheca (Compositae). 



CHoOH 

 O 



oh\ 



-o- 



HO 



CH3 

 -C-CH3 



teN 



OH 



(5) Lotaustraloside is from species of Lotus and Trifolium 

 repens (Leguminosae). 



CH3 



CH.,OH 



HO 



C — CH2 — CH3 



OH 



(6) Acacipetaloside is found in the legume genus, Acacia. 



CH.OH 



OH 



