1,8-diacyloxy-10-acylanthrones
Patent 4696941 Issued on September 29, 1987. Estimated Expiration Date: 
June 28, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 28, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesDermatalogical compounds and compositions Dihydroxy-acylanthrones having anti-psoriatic activity Patent #: 4299846 InventorsApplicationNo. 06/750088 filed on 06/28/1985US Classes:514/423, C=X bonded directly to the five-membered hetero ring by nonionic bonding (X is chalcogen)514/448, C=O bonded directly to the hetero ring (X is chalcogen)514/461, The hetero ring is five-membered514/676, Nitrogen containing514/680, Polycyclo ring system514/852, DANDRUFF514/859, Acne514/861, Eczema514/863, Psoriasis514/882, HEMORRHOID PREPARATION548/571, The chalcogen, X, is in a -C(=X)- group (e.g., 1-phenyl -2-pyrrolidino hexanone-1, etc.)548/572, The -C(=X)- is part of a -C(=X)X- group wherein the X's are the same or diverse chalcogens (e.g., 3-pyrrolidinemethanol propionates, etc.)548/573, The -C(=X)X- group is in a substituent attached to the ring nitrogen of the five-membered hetero ring (e.g., beta-pyrrolidyl ethyl ester of benzoic acid, etc.)549/498, The chalcogen, X, is in a -C(=X)- group549/499, The -C(=X)- is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens549/78, Chalcogen attached indirectly to the hetero ring by nonionic bonding549/79, The chalcogen, X, is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens552/290Carbon, halogen or plural oxygens bonded directly to the anthracene configured ring systemExaminersPrimary: Hollrah, Glennon H.Assistant: Covington, Raymond Attorney, Agent or FirmInternational ClassesC07D 333/22 (20060101)C07D 333/00 (20060101) Foreign Application Priority Data1984-06-29 FRAbstractCompounds of the formula ##STR1## wherein R1 and R2 are the same or different and represent a straight-chain or branched alkyl group of 1 to 15 carbon atoms, a cycloalkyl group of 3 to 6 carbon atoms, a 2-furyl, 3-furyl, 3-pyridyl, 4-pyridyl or 2-thienyl group or an aromatic group of the formula ##STR2## wherein X, Y and Z are the same or different and represent hydrogen, alkyl of 1 to 3 carbon atoms, trifluoromethyl, alkoxy with 1 to 4 carbon atoms, halogen, nitro or hydroxy groups are useful as pharmaceutical, veterinary and cosmetic agents.Other References
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