Patent · US Expired

2,3-Dihydrobenzofurans

US4107437A · kind A · utility

3Cited by
3References
12Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 2, 1977
Grant dateAug 15, 1978
Priority date—
Expiry dateMay 2, 1997

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA61P25/20
  • WIPO fieldPharmaceuticals
  • WIPO sectorChemistry

Abstract

2,3-Dihydrobenzofuran of formula: ##STR1## wherein R.sup.1 and R.sup.2 are each, independently, a lower alkyl or lower phenylalkyl or form, together with the nitrogen atom to which they are attached, a 4 to 8-membered saturated heterocyclic ring having 3 to 7 cyclic carbon atoms, a 4 to 8-membered saturated heterocyclic ring having 2 to 6 cyclic carbon atoms and two heteroatoms one of which is said nitrogen atom and the other is an oxygen atom, a sulphur atom or another nitrogen atom, said other nitrogen atom being optionally substituted by a phenyl, halophenyl, trifluromethylphenyl, lower alkylphenyl or lower alkoxyphenyl; n is 2 or 3, and the salts thereof.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.