New Dimeric Monoterpenes and Dimeric Diterpenes from the Heartwood of Chamaecyparis obtusa var. formosana.

Abstract

For Abstract see ChemInform Abstract in Full Text.

Untitled

“…The only difference between the two com- pounds is the configuration at C-7′. Two diterpenoid dimers, namely obtusanols A and B (39,40), were isolated from the heartwood of Chamaecyparis obtusa, and characterized by spectroscopic means and chemical degradation [45]. Obtusanols A and B have a rare peroxide bond linking two abietanoid units between C-7 and C-12′.…”

A New Phenolic Glycoside from Chamaecyparis obtusa var. breviramea f. crippsii

“…There are six speciesin the genus Chamaecyparis , which are mainly distributed in North America, Japan, and Taiwan [ 1 ]. Chamaecyparis plants have been found to be rich sources of monoterpenes [ 2 ], sesquiterpenoids [ 3 ], diterpenes [ 2 , 4 ] and lignans [ 5 , 6 , 7 ], some of which have shown antitumor, antimalarial and antibacterial activities [ 8 , 9 , 10 ]. Chamaecyparis obtusa (Sieb.…”