Facile synthesis of 6(E)-geranylgeraniol-19-oic acid 1,a naturally occurring alicyclic diterpene acid,by a Horner-Wadsworth-Emmons olefination of two readily av
A new method for synthesis of 3-azido-3-deoxyxylofuranoside was described. D-ribose was methylated, then treated with methanesulfonyl chloride to give II. II wa
The structures of five metabolites (2-6) of agarofuran 1 were confirmed by synthesis. The configuration of the secondary hydroxyl in 7 was determined by Horeau
One new A - type proanthocyanidin trimer, lindetarmin trimer, was isolated from thestems of Lindera aggregata (Sims) Kosterm.. Its structure was elucidated by s
A new iridoid glycoside 1 and a new iridoid 2 were isolated from the whole plant of Pedicularis kansuensis f. albiflora. Their structures were elucidated by sp