Polygonum nodosum

Widespread Acacia catechu (Fabaceae), Polygonum nodosum (Polygonaceae), Salts capraea (Salicaceae), Coniferae glycosides in Rhododendron (Ericaceae), Astilbe (Saxifragaceae) spp. 

Erdtman, Ann. 539, 116 (1939) from other Pinus species G. Lindstedt, Acta Chem. Scand. 3, 755-772 (1949) J. C. Alvarez -Novoa et of., ibid. 4, 444 (1950) from Alnus siebotdtana, Betulaceae Y, Asakawa, Bull. Chem. Soc- Japan 44, 2761 (1971) from Polygonum nodosum, Polygonaceae M. Kuro-yanagi el aL. Chem. Pharm. Bull 30, 1602 (1982). Synthesis of pinosylvjn E. Spath, F. Liebherr. Ber 74, 869 (1941) of monomethyl ether E. Spath, K. Kromp, ibid. 1424 of... 

Ech, Echinochloa cms-galli Dig, Digitaria adscendens Pol, Polygonum nodosum Ama, Amamnthus retroflexus. 

Weeds Ech, Ediinochloa cms-galli Pol, Polygonum nodosum Ama, Amaranthus retrojleocus, Xan, Xanthium strumarium. 

Weeds Ech, Echinochloa crus-gcdli Poi, Polygonum nodosum, Ama, Amaranthus retrqflexus, Xan, Xanthium strumarium. 

Plant materials were collected in and around Sapporo during the summer months. For the screening test, 10 g (fresh weight) of the aerial parts (mainly leaves/stems) were immersed in 150 ml of MeOH for 3-4 days at room temperature. The resulting extract was then reduced to dryness and the residue was partitioned between EtOAc and water. In order to isolate and characterize the antidotes, Polygonum lapathifolium L. subsp. nodosum, P. sachalinense Fr. Schm. and P. thunbergii were collected in large quantities and extracted with MeOH. 

Polygonum lapathifolium L. subsp. nodosum aerial parts (12.8 kg)... 

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