Resins galbanum

The umbelliferone ether structure 1 was suggested for a natural product which was isolated from galbanum resin Does this structure fit the NMR results 48 Is it possible to give a complete spectral assignment despite lack of resolution of the proton signals at 200 MHz What statements can be made about the relative configuration ... 

A. F. Thomas, M. Ozainne, New sesquiterpene alcohols from galbanum resin the occurrence of C (10) epi sesquiterpenoids, Helv. Chim. Acta, 61(8), 2874 2880 (1978). 

Pelletier etatee that galbanum resin has the remarkable property of yielding an indigo-blue oil when heated to from 248° to 266°. Johnston assigns the formula OwHfl Q os representing the composition of tho resin. 

Kaiser, R., and Lamparsky, D. (1978). New macrolides and some sesquiterpenoid derivatives from Galbanum resin. Helv. Chim. Acta 61, 2671-80. 

Synonyms Ferula galbaniflua Galbanum Galbanum resin... 

Galbanum resin Gallium chloride Gallium oxide Gentamicin sulfate (cu)... 

Around 60 elemanes are known at present and some of these have been isolated from woody tissues. (-)-Elemol (206) was first isolated in 1907 (350) from Manila elemi oil obtained from the oleoresin of Canarium luzonicum. (-)-)ff-Elemene (209) (238, 396), shyobunone (210) (419), and a few related elemanes occur in the essential oil from rhizomes of Acorus calamus, Resin from Ferula spp. (Galbanum resin) contains 10-epi-elemol (211) (391). The furane derivative, curzerenone (212), has been isolated from rhizomes of Curcuma zedoaria (195). The majority of presently known elemanes have a lactone ring and are known as elemanolides they have been recently rewiewed (146). Callitrin (213) is an example of an elemanolide that has been isolated from the heartwood of Callitris col-umellaris (59). 

Common/vernacular names Galbanum resin, galbanum gum, galbanum oleoresin, galbanum gum resin, and galbanum oleogum resin. 

The first results encouraged the authors to analyse, by headspace SPME, substances mentioned in ancient texts or hieroglyphics as components of embalming fluids [true resins such as mastic, labdanum and pine resin or pine pitch and gum resins such as olibanum, myrrh and galbanum] [27, 28] with the aim of finding characteristic chemical compounds for each type of resin or gum resin. 

The resin of galbanum is dark yellowish-brown, transparent, brittle, and tasteless soluble in alcohol and ether scarcely so In spirit containing fifty per cent, of water, or in almond oil very slightly soluble in oil of turpentine, even when aided by heat, It dissolves in sulphuric acid, forming a dark yellowish brown liquid,... 

ALBETAD — is Galbanum, a disputed substance, supposed to be the resinous sap of an umbelliferous plant in Syria. It is referred to by Pliny and Suetonius. 

Galbanum Gum-resin. Ferula galbaniflua Persia and Afghanistan... 

Galbanum. Galbanum. - Bubon galbanum. W. I, 1439. Gummi resina. The gum resin. 

The discoveries of the isomeric dihydric phenols were as old as that of phenol itself. Catechol,(1,2-benzenediol, 1,2-dihydroxybenzene, o-dihydroxybenzene) was first obtained in 1839 essentially from the dry distillation of tannin. Resorcinol (1,3-dihydroxybenzene), was isolated in 1864 from the alkaline fusion of galbanum, and of asafoetida, resins, repectively from Iranian species of Ferula and Narthex asafoetida. In 1820 hydroquinone was recovered from the dry distillation of quinic acid although it was not investigated structurally until 1844 by Wohler. 

Properties Colorless to pale yel. oily liq. fresh green, resinous, galbanum, green pepper odor sol. in alcohol insol. in water m.w. 150.26 sp.gr. 0.787-0.793 dens. 6.574 Ib/gal b.p. 280-285 C flash pt. (CC) 65 C ref. index 1.508-1.517 (20 C) Toxicology LD50 (oral, rat) 7563 mg/kg, (skin, rabbit) > 3 g/kg may cause eye/skin/mucous membrane/upper respiratory tract irritation may be harmful by ing., inh., skin absorp. TSCA listed... 

The three isomeric dihydroxybenzenes, C6H4(OH)2, are catechol (pyro-catechin) discovered by H. Reinsch resorcinol by Hlasiwetz and Barth by fusing guaiacum, galbanum, or ammoniacum resins with caustic potash and quinol (hydroquinone) by Pelletier and Caventou (1820) and Wohler (1844 see p. 326). Hydroquinone had been obtained by A. Kawalier, who called it arctuvin , by hydrolysis of the glycoside arbutin (Ci2Hie07) which he discovered in the leaves of the bear-berry. The orientations of the three di-hydroxybenzenes were established by Th. Petersen. Resorcinol was synthesised from benzene by Korner. ... 

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