ORGANIC COMPOUNDS AND THEIR PHARMACEUTICAL USE

There are described compounds of the formula (I) in which R1 is hydrogen or C1-6 alkyl, R2 is hydrogen, C1-6 alkyl or C3-6 alkenyl, R3 is hydrogen or C1-6 alkyl, R4 is hydrogen or an N-protecting group, n is 2, 3, 4 or 5, and X is oxygen, sulphur or -CH2-, provided that when X is -CH2- n is 0; and s...

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Bibliographische Detailangaben
Hauptverfasser: STEGGLES JAMES DAVID, VERGE POMFRET JOHN
Format: Patent
Sprache:eng
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Zusammenfassung:There are described compounds of the formula (I) in which R1 is hydrogen or C1-6 alkyl, R2 is hydrogen, C1-6 alkyl or C3-6 alkenyl, R3 is hydrogen or C1-6 alkyl, R4 is hydrogen or an N-protecting group, n is 2, 3, 4 or 5, and X is oxygen, sulphur or -CH2-, provided that when X is -CH2- n is 0; and salts thereof. The compounds in which R4 is hydrogen have pharmaceutical activity.