Rhus, cotinus

Fisetin (= 5-Deoxy-quercetin 3,7,3, 4 -Tetrahydroxyflavone) (flavonol) Rhus cotinus, R. rhodantherma (Anacardiaceae), Acacia spp. (Fabaceae) HIV-1 protease (50 pM) (Neutral endopeptidase) [43]... 

Pentagalloylglucose Acer (Aceraceae), Rhus, Cotinus, H+,K+-ATPase (0.2, 10)... 

Fisetin (= 5- Rhus cotinus, R. rhodantherma TPO (CDPK, ITDI, LOX,... 

Constituent of Rhus cotinus L., Bhus sue-cedanea L., and Rhus rhodanthema. Colour cryst. from HgO. M.p. 216-18 . Sol. Et-0, CgHg, CHCI3. Sol. alkalis to red sols. FeCls — green col. Reduces NHg.AgNOg, and hot Fehlings. 

Horhammer, L., H. Wagner, J. Izquierdo und H. Endres Isolierung eines Gallus-sauremethylesters aus Cotinus Coggygria Scop. Rhus cotinus L.) durch Chromato-graphie an Polyamid. Arch. Pharmaz. (Weinheim) 291, 269—273 (1958). 

Old fustic from the heartwood of Chlorophora tinctoria (Moraceae) of central America and young fustic from Rhus cotinus (Anacardiaceae) were used in the middle of the 17th century to produce a range of light-stable olive-yellow to gold shades depending on the mordants. Similar colors were obtained with quercitron bark (Quercus discolor, Fagaceae) of the USA. 

Dihydroflavonols, which have different substituents at both C-2 and C-3, can exist in both cis- and trans-iovm >, (-h)-Dihydroquercetin (25), has been established to have the IR-. iR stereochemistry and the majority of other flavanonols that have been studied also possess this configuration. However, a few dihydroflavonols have been isolated in different optically active forms. Notably, both (-h)-fustin (26a) and (-)-fustin (26b) are known, the first occurring in Acacia mollissima heartwood and the second in Rhus cotinus wood. These compounds have opposite configurations. 

King H G C, White T 1961 The colouring matter of Rhus cotinus wood (young fustic). J Chem Soc 3538-3539... 

Fustics f3s-tik n [ME fustyk smoke tree, fr. MF fustoc, fr, Arabic fustuq fr. Gk pistake pistachio tree] (15c) Yellow coloring matters of natural origin. Old fustic is obtained from the species, Morus tinctorial and consists of moric and morintannic acids. Young fustic is obtained from Rhus cotinus, and consists of fustic. 

Fiseiin, 2-(3,4-dihydroxyphenyl)-3,7-dihydroxy-4H-l-benzop3nan-4-one (or 3,3 ,4 ,7-tetrahydroxyflavone) belongs to tbe group of flavonoid compounds (flavonols) which commonly occur in plants and have long found use as dyestuffs. It is the principal component of young fustic (. v.), dye derived from Cotinus coggyria (formerly Rhus cotinus-, commonly known as Venetian... 

Young fustic came from Cotinus coggyria (formerly Rhus cotinus commonly known as Venetian or dyer s sumach). It is a yellow dye principally containing the flavonoid compound fisetin q.v.) as well as fustin. 

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