Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D493/00—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system
  • C07D493/02—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system in which the condensed system contains two hetero rings
  • C07D493/04—Ortho-condensed systems
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
  • C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
  • C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
  • C07D311/22—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 4
  • C07D311/24—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 4 with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 2
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
  • C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
  • C07D311/78—Ring systems having three or more relevant rings
  • C07D311/92—Naphthopyrans; Hydrogenated naphthopyrans

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
• Plural Heterocyclic Compounds (AREA)
• Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
• Pyrane Compounds (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=27260092

Family Applications (1)

Country Status (7)

• 1978
  • 1978-11-23 SE SE7812089A patent/SE7812089L/xx unknown
  • 1978-11-27 CA CA000316937A patent/CA1117540A/en not_active Expired
  • 1978-11-27 FI FI783616A patent/FI783616A/fi unknown
  • 1978-11-27 DK DK528378A patent/DK528378A/da not_active Application Discontinuation
  • 1978-11-28 PT PT68839A patent/PT68839A/pt unknown
  • 1978-11-28 CH CH1218478A patent/CH637390A5/fr not_active IP Right Cessation
  • 1978-11-29 JP JP14669478A patent/JPS5498769A/ja active Pending
• 1983
  • 1983-03-15 CH CH143383A patent/CH639968A5/fr not_active IP Right Cessation
  • 1983-09-16 SE SE8304996A patent/SE8304996D0/xx not_active Application Discontinuation

Also Published As

Similar Documents