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Orcinol tridepsides

Like the orcinol / ara-depsides this group of compounds exhibit variations in the length of the side-chain (232, R R = 3117, C5H11) and degree of methylation of the phenolic and carboxyl groups (232, R, R , R,  [Pg.147]

However the structural variations are more limited in the m /a-depside group as no depsides with oxidised side-chains, or chain length other than C3 or C5 have yet been discovered. [Pg.148]

Bryan AJ, Elix JA (1976) 2-0-Acetyltenuiorin, a new tridepside from the lichen Pseudo cyphellaria australiensis. Aust J Chem 29 1147-1151 Bryan AJ, Elix JA, Norfolk S (1976) Synthesis of orcinol tridepsides and aphthosin, an orcinol tetradepside. Aust J Chem 29 1079-1086... [Pg.450]

Synthesis of -Orcinol para-Depsides, -Orcinol meta-Depsides, meta-Orcinol Depsides and Orcinol Tridepsides... [Pg.156]

The orcinol series The most conunon fate of acetate-polymalonate-derived phenolic acids in lichens is intermolecular esterification of two or three similar or identical units. For example, the carboxylic acid of one unit is joined to the hydroxyl para to the carboxylic acid of the second unit. Such esterifications lead to the para-depsides. A second esterification reaction leads to tridepsides. If an ester linkage joins the first unit to a position meta to the carboxylic acid of the second ring, a weta-depside results. [Pg.10]

See other pages where Orcinol tridepsides is mentioned: [Pg.104]    [Pg.104]    [Pg.146]    [Pg.147]    [Pg.157]    [Pg.165]    [Pg.220]    [Pg.104]    [Pg.104]    [Pg.146]    [Pg.147]    [Pg.157]    [Pg.165]    [Pg.220]   
See also in sourсe #XX -- [ Pg.146 , Pg.156 , Pg.157 , Pg.165 ]



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Orcinols

Tridepsides

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