Pharmacologically active compounds, methods for the preparation

Organic compounds -- part of the class 532-570 series – Organic compounds – Nitriles

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558405, 558406, 558411, 558414, 558416, 558418, 558419, 558423, 560 20, 560 24, 560 25, 560 26, 560 29, 560 55, 560 75, 560106, 560130, 560132, 560138, 560142, 560144, 562434, 562465, 562478, 564166, 564169, 564170, 568306, 568308, 568706, 568711, 544167, 544391, 546180, 546208, 546230, 546334, C07C25533, C07C25534, C07C20522, C07C 49213

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active

052833526

ABSTRACT:
Catechol compounds of formula I ##STR1## where R.sub.1, R.sub.2, R.sub.3 and X are as described herein are effective Catechol-O-methyltransferase inhibitors.

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