26995-94-8Relevant articles and documents
SESQUITERPENOIDS FROM PETASITES FRAGRANS
Sugama, Ko,Hayashi, Koji,Nakagawa, Takashi,Mitsuhashi, Hiroshi,Yoshida, Naotoshi
, p. 1619 - 1622 (1983)
Chemical analysis of Petasites fragrans yielded the eremophilane type of sesquiterpenes: petasol, isopetasol, S-petasin, neo-S-petasin, and a mixture of petasol derivatives, with caffeic acid methyl ester and a mixture of phytosterols.Their structures were elucidated by chemical and spectroscopic methods.Key Word Index - Petasites fragrans; Compositae; Senecioneae; eremophilane; petasol; isopetasol; S-petasin; neo-S-petasin.
Isolation of 2-Alkyl-4-quinolones with Unusual Side Chains from a Chinese Pseudomonas aeruginosa Isolate
Li, Jianye,Sun, Weiwei,Saalim, Muhammad,Wei, Guixiang,Zaleta-Pinet, Diana A.,Clark, Benjamin R.
supporting information, p. 2294 - 2298 (2020/07/14)
Chemical investigation of a Pseudomonas aeruginosa strain isolated from Hebei, China, led to the isolation of a suite of quinolones, quinolone-N-oxides, and phenazines, the structures of which were elucidated by detailed spectroscopic analysis. Most notable among the secondary metabolites isolated was an unprecedented 4-quinolone containing an S-methyl group in the side chain and a new derivative including a phenyl ring in the side chain, which expand significantly the variety of structural motifs found in the quinolones and raise interesting questions about their biosynthesis.
Total synthesis and biological evaluation of methylgerambullone
Moon, Jong Taik,Ha, Sung Hoon,Lee, So Hyung,Kwon, Tae Hui,Oh, Chun Rim,Kim, Young Deuk,Kim, Jungahn,Choo, Dong Joon,Lee, Jae Yeol
scheme or table, p. 52 - 55 (2010/04/24)
First total synthesis of methylgerambullone (MGB, 1) isolated from Glycosmis angustifolia was completed via a convergent route. The effect of MGB on the contractile responses of the isolated guinea-pig ileum induced by acetylcholine was investigated. As a result, it showed a potent relaxation rate (78.66 ± 4.30% at 100 mg/L) in a concentration-dependent manner on longitudinal smooth muscle contraction of isolated guinea-pig ileum induced by 1 μM acetylcholine.