Detail of "2957-21-3"

Reference

Potential drugs from propolis

Potential drugs from propolis. Ghisalberti, Emilio L.; Jefferies, P. R.; Lanteri, R. (Dep. Org. Chem., Univ. West. Australia, Nedlands, Aust.). Mass Spectrom. Drug Metab., [Proc. Int. Symp.], Meeting Date 1976, 111-30. Edited by: Frigerio, Alberto; Ghisalberti, Emilio L. Plenum: New York, N. Y. (English) 1977. CODEN: 37AIAE. DOCUMENT TYPE: Conference CA Section: 63 (Pharmaceuticals) Section cross-reference(s): 12, 27, 25 Propolis or bees glue from western Australia was subjected to extensive fractionation and pinostrobin (I) [480-37-5], sakuranetin (II) [2957-21-3], isosakuranetin (III) [480-43-3], xanthorrhoeol (IV) [1485-31-0], pterostilbene (V) [537-42-8], 5-hydroxy-4'7-dimethoxyflavanone [13238-06-7], and 3,5-dimethoxybenzyl alc. [705-76-0] were isolated. II and IV possess antifungal activity and III was shown to have papaverine-like spasmolytic activity.

Chemotaxonomy of section Leuce poplars by GC-MS of bud exudate

Chemotaxonomy of section Leuce poplars by GC-MS of bud exudate.Some chemicals with cas registry numbers like 52783-45-6 and 2957-21-3 are also used. Greenaway, W.; English, S.; May, J.; Whatley, F. R. (Dep. Plant Sci., Oxford OX1 3RB, UK). Biochem. Syst. Ecol., 19(6), 507-18 (English) 1991. CODEN: BSECBU. ISSN: 0305-1978. DOCUMENT TYPE: Journal CA Section: 11 (Plant Biochemistry) Gas chromatog.-mass spectroscopic anal. of bud exudate compn. of a no. of poplars of the section Leuce indicated that Populus alba, P. grandidentata and P. tomentosa were similar in secreting bud exudate contg. only hydrocarbon material, whereas P. sieboldii, P. remula and P. tremuloides secreted bud exudate which also included phenolics. The latter three species were distinct from other poplars in secreting an exudate contg. flavanones produced only by the first steps of flavonoid biosynthesis, such as naringenin and its Me ethers, sakuranetin and isosakuranetin, together with their chalcones. Principal component anal. indicated that there are hybrids which are not clearly distinct morphol. from one of the parent species. .