Sesqui- and diterpenoids from the japanese liverwort Jungermannia hattoriana

Studies on Constituents from Chamaecyparis pisifera and Antibacterial Activity of Diterpenes.

“…Several types of abietane and 9(10→20)-abeo-abietane-type diterpenes were reported from C. pisifera. [4][5][6][7] From the methanol extract of the plants, the novel chromone derivative (1) and 9(10→20)-abeo-abietane type diterpene (2) were isolated along with the known abietane-type diterpenes pisiferic acid (3), 7) pisiferol (4), 7) pisiferal (5), 7) O-methylpisiferic acid (6), 7) pisiferdiol (7), 6,7) pisiferanol (8), 7) and 8(14),15-pimaradiene-19-oic acid (9), 8) and the flavonoids aromadendrin (10) 9) and apigenin (11) 10) as described in the Experimental section.…”

Ptychantins from the Liverwort Ptychanthus Striatus

“…3,6 Moreover, diterpenoids of labdanetype, such as 13-15, which were obviously precursors of ptychantins, were also isolated or identified in some of the plant oils in the present study (Table 3). Both manoyl oxide (13) and labda-7, 14-dien-13-ol (14) were identified by comparison of their GC-MS data since both were isolated components in the Taiwanese liverwort Mylia nuda. 11 The identity of 13-epi-sclareol (15) was confirmed mainly on the basis of its 13 C NMR data.…”

“…12,13 The only distinct spectral difference between sclareol (13S) and 13-epi-sclareol (13R, 15) is the 13 C NMR resonance of C-16: d C 26.8 vs. 29.1. The C-13 epimer of sclareol had been a reported component in the liverworts Jungermannia hattoriana 14 and J. infusca.…”

Determination of long-chain fatty acids in bryophyte plants extracts by HPLC with fluorescence detection and identification with MS

“…It is estimated that 80% of the bryophytes show sharp, acrid, and unpleasant taste that are not damaged by insect, bacteria, snails and mammals [1]. Although many chemical components have been elucidated in the bryophyte plants such as lipophilic terpenoids [2,3], acetogenins [4], and bisbibenzyl compounds [5], literature reports on LCFAs (>C20) in bryophyte plants are relatively poor. LCFAs play physiologically important roles at trace levels in the regulation of a variety of physiological and biological functions.…”

“…The aims of the present work are: (1) To develop a new labeling reagent 1-[2-(p-toluenesulfonate)-ethyl]-2-phenylimidazole- [4,5-f]-9,10-phenanthrene (TSPP), which used DMF replacing crown ether and benzene or toluene as solvents to label LCFAs; (2) To develop a fast and simple technique for high extraction efficiency of LCFAs in bryophyte plants; different extraction methods such as ultrasonic-assisted solvent extraction, distillation extraction and shaking extraction are tested. The optimal derivatization and extraction conditions are evaluated.…”