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Serving hundreds of leading biopharmaceutical companies globally:

Argus Health
US Army
Queensland Health
Daiichi Sankyo

Generated: May 22, 2018

DrugPatentWatch Database Preview

Details for Patent: 4,351,942

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Title: Isochromans
Abstract:A process applicable to the preparation of a wide variety of novel polycyclic heterocycles having a newly-formed pyran ring is disclosed. According to the process an aromatic nucleus bearing an ethanol group, for example, 3,4-dimethoxyphenethyl alcohol, is condensed with an aldehyde or ketone or a protected aldehyde or ketone, for example, aminoactaldehyde diethyl acetal, in the presence of an acid catalyst to afford the polycyclic heterocycle, for example, 6,7-dimethoxy-1-isochromanmethylamine. The new heterocycles so formed are useful for preparing derivatives having antiinflammatory, antibacterial or antifungal activities.
Inventor(s): Dobson; Thomas A. (Dollard des Ormeaux, CA), Humber; Leslie G. (Dollard des Ormeaux, CA), Demerson; Christopher A. (St. Laurent, CA), Jirkovsky; Ivo L. (Montreal, CA)
Assignee: American Home Products Corp. (New York, NY)
Filing Date:Jan 07, 1980
Application Number:06/110,430
Claims:1. A compound of formula 1 ##STR27## wherein R.sup.3 and R.sup.4 each are hydrogen, hydroxyl or lower alkoxy; R.sup.1 is hydrogen, or lower alkyl; and R.sup.2 is 2-thienyl, 2-pyridyl, 3-pyridyl or ##STR28## wherein R.sup.7 and R.sup.8 are the same or different and each represent hydrogen, halo, or hydroxyl with the proviso that when R.sup.7 and R.sup.8 are hydrogen, then R.sup.3 and R.sup.4 are hydroxyl, and when R.sup.7 or R.sup.8 is halo then R.sup.3 and R.sup.4 is hydroxyl or lower alkoxy.

2. 1-(4-Chlorophenyl)-6,7-dimethoxyisochroman, as claimed in claim 1.

3. 1-(2,6-Dichlorophenyl)-6,7-dimethoxyisochroman, as claimed in claim 1.

4. m-(6,7-Dimethoxyisochroman-1-yl)phenol, as claimed in claim 1.

5. 6,7-Dimethoxy-1-(2-thienyl)isochroman, as claimed in claim 1.

6. 6,7-Dimethoxy-1-(3-pyridyl)isochroman, as claimed in claim 1.

7. 6,7-Dimethoxy-1-(2-pyridyl)isochroman, as claimed in claim 1.

8. 1-(2-Thienyl)-6-isochromanol, as claimed in claim 1.

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Serving hundreds of leading biopharmaceutical companies globally:

Harvard Business School
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Farmers Insurance
US Army
Johnson and Johnson

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