52869-21-3Relevant articles and documents
Experiments Directed Towards the Synthesis of Anthracyclinones. XXVI. The Preparation of Chiral Intermediates for Anthracyclinone Synthesis
Beauregard, Daniel A.,Cambie, Richard C.,Dansted, Paul C.,Rutledge, Peter S.,Woodgate, Paul D.
, p. 669 - 676 (1995)
(2'R)-1,5-Dimethoxy-2-(2'-methyloxiran-2'-ylmethyl)anthraquinone (8), an intermediate for the synthesis of fridamycin E, has been prepared enantioselectively via the diol (15).The diol (15) was prepared in high yield by asymmetric cis-hydroxylation of the alkene (11).The analogous diol (22), a vineomycinone B2 precursor, was also prepared.
Regioselective synthesis of 2- and 3-(Phenylthio)juglone derivatives
Laugraud,Guingant,Chassagnard,d'Angelo
, p. 1557 - 1560,1557-1560 (2007/10/02)
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Selective Dealkylation of Methoxyanthraquinones via Difluoro1,O9>boron Chelates: Synthesis of Hydroxymethoxyanthraquinones
Preston, Peter N.,Winwick, Thomas,Morley, John O.
, p. 1439 - 1441 (2007/10/02)
1,8-, 1,5- 1,2-, and 1,4-Dimethoxyanthraquinones have been treated with boron trifluoride-diethyl ether to give difluoro(anthraquinonato)boron chelates (1a-d) respectively. 1,4,5-Trimethoxyanthraquinone was similarly converted separately in benzene and toluene into the mono- (2) and bis-difluoroboron(3)-chelates respectively, and 2,2',4,4'-tetramethoxybenzophenone was converted by BF3*Et2O in toluene into the boron adduct (4).Treatment of these derivatives, (1a-d) and (2)-(4), with methanol gave the following uncomplexed derivatives in good yield respectively: 1-hydroxy-8-methoxyanthraquinone, 1-hydroxy-5-methoxyanthraquinone, 1-hydroxy-2-methoxyanthraquinone, 1-hydroxy-4-methoxyanthraquinone, 4-hydroxy-1,5-dimethoxyanthraquinone, 1,4-dihydroxy-5-methoxyanthraquinone, and 2-hydroxy-2',4,4'-trimethoxybenzophenone.