113452-39-4Relevant articles and documents
Regiodefined synthesis of brominated hydroxyanthraquinones related to proisocrinins
Roy, Joyeeta,Mal, Tanushree,Jana, Supriti,Mal, Dipakranjan
, p. 531 - 536 (2016)
Dibromobenzoisofuranone 12, synthesized in six steps, was regiospecifically annulated with 5-substituted cyclohexenones 13/36 in the presence of LiOt-Bu to give brominated anthraquinones 14/38 in good yields. Darzens condensation of 30 was shown to give c
Perhydroisoindole derivatives as substance P antagonists
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, (2011/05/18)
New perhydroinsoindole having the general formula (I) wherein R1 is optionally substituted phenyl or is cyclohexadienyl, naphtyl, indenyl or mono or polycyclic heterocyclyl, saturated or unsaturated 5 to 9C and optionally substituted, R2 is H or halogen, OH, alkyl, amino, aminoalkyl, alkylaminoalkyl, dialkylaminoalkyl, alkyloxy, alkylthio, acyloxy, carboxy, alkyloxycarbonyl, dialkylaminoalcyloxycarbonyl, benzyloxycarbonyl, amino or acylamino, R3 is phenyl optionally substituted in position -2 by a radical alkyl or alkyloxy 1 or 2C or by OH or F, or disubstituted by CF3, and R4 is an alkyl radical containing 1 or 2C substituted by halogen or CN, N3 or --NHCN, and the radicals R which are similar or different represent H, alkyl or phenyl, in their isomer forms having the structure (Ia) or mixtures thereof, optionally their salts when they exist and preparation thereof. The new derivatives of the invention are particularly useful as antagonists of substance P.
Anionic Cycloaddition with Thiophthalides: an Integrated Approach to the Synthesis of Olivin and Pillaromycinone
Majumdar, Gita,Pal, Ranjan,Murty, Kadiyala V. S. N.,Mal, Dipakranjan
, p. 309 - 316 (2007/10/02)
A systematic study of the potential reactivity of the thiophthalides 4 and 18 - 20 as 1,4-dipolar synthons, has shown that 3-phenylthiothiophthalide 19 is the best annulating agent for the preparation of tricyclic intermediates related to olivin.The reagent 19 underwent anionic cycloaddition with cyclohex-2-enone 5a in the presence of lithium tert-butoxide to give the anthracenones 24a and 25 in a combined yield of 90percent.