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Class Information
Number: 549/389
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen as the only ring hetero atoms (class 540, subclass 1) > Oxygen containing hetero ring (e.g., dioxirane, etc.) > The hetero ring is six-membered > Polycyclo ring system having the hetero ring as one of the cyclos > Tricyclo ring system having the hetero ring as one of the cyclos > The tricyclo ring system consists of three six-membered cyclos (e.g., xanthene, etc.) > Naphtho-pyrans (including hydrogenated)
Description: Compounds wherein the tricyclo ring system consists of a naphthalene ring system, which may be hydrogenated, sharing two adjacent carbons with the six-membered hetero ring.


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
7584630 Photochromic ocular devices Sep. 8, 2009
7329687 Flavanoid compounds as chemotherapeutic, chemopreventive, and antiangiogenic agents Feb. 12, 2008
7253207 Quinones as disease therapies Aug. 7, 2007
7250120 Benzo-, naphtho- and phenanthrochromene substituted by carbamated or ureated phenyls, preparation thereof and compositions and articles containing them Jul. 31, 2007
7105685 Cannabinol derivatives Sep. 12, 2006
6967249 Photochromic 3H-naphtho[2,1-b]-pyran compounds and photochromic articles produced therewith Nov. 22, 2005
6939007 Photochromic bis-naphthopyran compounds and methods for their manufacture Sep. 6, 2005
6890950 Lapachone delivery systems, compositions and uses related thereto May. 10, 2005
6887533 Fluorinated oxaanthracenes and their use in liquid-crystal mixtures May. 3, 2005
6863843 Naphthopyran compounds, photoresponsive compositions and lenses Mar. 8, 2005
6809176 Quinones as disease therapies Oct. 26, 2004
6747145 Photochromic bis-naphthopyran compounds and methods for their manufacture Jun. 8, 2004
6719926 Chromene compound Apr. 13, 2004
6700001 Process for stereoselective synthesis of 2-hydroxymethyl chromans Mar. 2, 2004
6630597 Photochromic 6-aryl substituted 3H-naphtho(2,1-b)pyrans Oct. 7, 2003
6627121 Photochromic naphthopyran compounds Sep. 30, 2003
6602903 Substituted heterocyclic compounds Aug. 5, 2003
6555028 Polymeric matrix compatibilized naphthopyrans Apr. 29, 2003
6525194 Chromene compound Feb. 25, 2003
6478989 Aromatic substituted naphthopyrans Nov. 12, 2002
6478988 Photochromic substituted naphthopyran compounds Nov. 12, 2002
6458974 Synthesis of .beta.-lapachone and its intermediates Oct. 1, 2002
6403347 HIV integrase inhibitors Jun. 11, 2002
6399791 Naphthopyran derivatives, compositions and (co) polymer matrices containing same Jun. 4, 2002
6398987 Naphthopyrans having a perfluoroalkyl substituent in position 5, preparation and compositions and matrices containing them Jun. 4, 2002
6353102 Photochromic naphthopyrans Mar. 5, 2002
6348604 Photochromic naphthopyrans Feb. 19, 2002
6340766 Substituted napthopyrans Jan. 22, 2002
6337409 Photochromic naphthopyran compounds Jan. 8, 2002
6281366 Photochromic [3H]naphtho[2,1-b]pyran compounds containing an acetylenic substituent, process for their manufacture, and photochromic materials and articles obtained Aug. 28, 2001
6248264 Neutral coloring photochromic 2H-naphtho[1,2-b] pyrans and heterocyclic pyrans Jun. 19, 2001
6215007 Recombinant production of novel polyketides Apr. 10, 2001
6211374 Water soluble, pyran-based photochromic compounds having carboxylate functionality Apr. 3, 2001
6197225 Chromene compound Mar. 6, 2001
6190580 Diaryl-2H-naphthopyrans Feb. 20, 2001
6146554 Photochromic naphtopyrane colorants, method for the production and use thereof, photochromic object Nov. 14, 2000
6113814 Polymerizable polyalkoxylated naphthopyrans Sep. 5, 2000
6096246 Photochromic naphthopyrans, compositions and articles containing them Aug. 1, 2000
6080338 Water soluble photochromic compounds, compositions and optical elements comprising the compounds Jun. 27, 2000
6043269 cis-3,4-chroman derivatives useful in the prevention or treatment of estrogen related diseases or syndromes Mar. 28, 2000
6043381 Process for preparing substituted benzo[1,2-g]-chrom-3-ene, benzo[1,2-g]-thiochrom-3-ene and benzo[1,2-g]-1,2-dihydroquinoline derivatives Mar. 28, 2000
6036890 Diaryl-2H-naphthopyrans Mar. 14, 2000
6034256 Substituted benzopyran derivatives for the treatment of inflammation Mar. 7, 2000
5990305 Photochromic diaryl-3H-naphthopyrane Nov. 23, 1999
5969163 Ortho-quinone derivatives, novel synthesis therefor, and their use in the inhibition of neoplastic cell growth Oct. 19, 1999
5961892 Polyalkoxylated naphthopyrans Oct. 5, 1999
5952515 Diaryl-2h-napthopyrans Sep. 14, 1999
5932725 Chromene compound Aug. 3, 1999
5912362 Process for preparing isochroman compounds Jun. 15, 1999
5888432 2-Adamantyl benzopyrans the compositions and (co)polymer matrices containing them Mar. 30, 1999

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