Details for Patent: 3,937,838

Summary for Patent: 3,937,838

Title:	Orally active bronchospasmolytic compounds and their preparation
Abstract:	Novel compounds are disclosed having useful activity as bronchodilators of improved longevity of action and reduced incidence of side effects. These compounds are described by the formula: ##EQU1## wherein R.sub.1 is a member of the class consisting of tertiary butyl and cyclobutyl, and R.sub.2 is a hydrogen or 2 to 5 carbon atom acyl radical, and pharmaceutically acceptable salts thereof. The activity of these compounds is compared to previously known bronchodilators such as 1-(3', 5'-dihydroxyphenyl)-2-(isopropylamino)-ethanol, having the common name orciprenaline, and 1-(3', 4'-dihydroxyphenyl-2-isoproplyamino-ethanol, having the common name isoprenaline.
Inventor(s):	Wetterlin; Kjell Ingvar Leopold (Sandby, SW), Svensson; Leif Ake (Lund, SW)
Assignee:	Aktiebolaget Draco (Lund, SW)
Application Number:	05/372,497
Patent Claim Types: see list of patent claims	Use; Composition; Compound;

Drugs Protected by US Patent 3,937,838

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Patented / Exclusive Use	Submissiondate

Foreign Priority and PCT Information for Patent: 3,937,838

Foriegn Application Priority Data
Foreign Country	Foreign Patent Number	Foreign Patent Date
	14182/66	Oct 19, 1966

International Family Members for US Patent 3,937,838

Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Austria	286964
Austria	287678
Austria	287679
Austria	288356
Belgium	704932