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公开(公告)号：KR790000086B1
公开(公告)日：1979-03-12
申请号：KR740002937
申请日：1974-06-29
Applicant: ABBOTT LAB
Inventor： CHECK MAN LEE
Abstract: Title compds. useful as analogesics and antidepressants, were prepd. by dehydration of the corresponding 1,2,3,4-tetrahydro derivs. 5H-[1 benzopyrano [3,4-d pyridine (I; R1 = lower alkyl, R2 = alkyl, cycloalkyl, R3 = hydroxy, acyloxy, lower alkoxy, lower alkenyloxy, lower alkoxy, lower alkenyloxy, lower alkynyloxy) was prepd. by refluxing the 1,2,3,4-tetrahydro-5H [1 benzopyrano [3,4-d pyridine with pd/c in xylene for 25hr.
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