Some Chemical Observation on a Natural Graft-Wood of Japanese Cypress (Chamaecyparis obtusa ENDL.) and Sawara Cypress (Chamaecyparis pisifera SIEB. et ZUCC.)

Abstract

Chemical analyses were carried out on a graft-wood of hinoki (Chamaecyparis obtusa) and sawara cypress (C. pisifera), and the results were compared with the data from normal woods of hinoki and sawara. The amount of boiling water soluble matter were much higher in the graft-wood than in normal woods (1.5-3.6 times), and also the amount of alcohol-benzene soluble matter in the graft-woods were two times higher than those of the normal woods. Lignin content varied little among the samples. α-Terpineol which is the most characteristic component to identify hinoki and sawara woods, borneol, DL-limonene and bornyl acetate were identified, respectively. Some group peaks which are supposed to be cadinenes and cadinols were also found on g.l.c. of steam volatile fraction. Sawaranin [2,3-desoxy-2-(p-hydroxy phenyl hexonic lactol)] was first isolated from methanol extracts of normal woods of hinoki and identified with the results of u.v.. i.r. and n.m.r.