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Abstract The wood of Alnus japonica has been shown to contain a number of biarylheptanoids as well as other phenolics, including secoisolariciresinol diferulate. The co-occurrence of cyclized… (More)
The structure of yahazunol, an antimicrobial substance isolated from the brown seaweed D. undulata Okamura, was established on the basis of spectral and chemical evidence.
The structures of fukurinolal and fukurinal, two new diterpenoids isolated from the brown seaweed Dilophus okamurai Dawson, have been established as 1 and 2, the latter possessing a novel bicyclic… (More)
2-(3,7,11-Trimethyl-2,6,10-dodecatrienyl)hydroquinone, a new substance of biogenetic interest, has been isolated from the brown seaweed D. undulata. Antimicrobial activity has been tested.
One of the gamones (gamone II) which are effective for the induction of conjugation in Blepharisma intermedium has been isolated in a crystalline form and designated as blepharismin. From the result… (More)
Abstract A trans -clerodane and a diterpenoid with the bicyclo[5.4.0]undecane skeleton were isolated from the aerial part of Portulaca cv Jewel, and their structures were elucidated by spectroscopic… (More)
Four new diterpenes have been isolated from a Japanese brown alga and their structures have been shown to be expressed by 2, 3, 4 and 5, on the basis of spectral and chemical means.