The present invention relates to nitro-vinyl-pyrazole compounds of formula (B) ##STR00001##
wherein ring A, R.sup.B2 and R.sup.B3 are as defined in claim 1, as well as the manufacture of such compounds and their subsequent use in the production of agrochemicals and/or pharmaceuticals.

The present invention relates to pyrazole derivatives of formula (X) ##STR00001## wherein ring A is a pyrazole and substituents R.sup.B1, R.sup.B2, n, R.sup.Q1, R.sup.Q2, R.sup.Q3, and R.sup.Q4 are as defined in claim 1, their manufacture, and their use in the manufacture of agrochemicals and pharmaceuticals.

The present invention relates to nitro-vinyl-pyrazole compounds of formula (B) ##STR00001##
wherein ring A, R.sup.B2 and R.sup.B3 are as defined in claim 1, as well as the manufacture of such compounds and their subsequent use in the production of agrochemicals and/or pharmaceuticals.

The present invention relates an enantioselective process for the manufacture of a compound of formula (E) ##STR00001##
wherein ring A, R.sup.B2 and R.sup.B3 are as defined in claim 1.

The present invention provides a pyrrole compound represented by the following formula (1):

##STR00001##

The present invention provides a pyrrole compound represented by the following formula (1):

##STR00001##

The present invention relates to compounds of formula (C) ##STR00001##
(C), wherein ring A, R.sup.B2 and R.sup.B3 are as defined in claim 1.

The present invention provides a production method of a sulfonylpyrrole compound useful as a pharmaceutical product, a production method of an intermediate used for the method, and a novel intermediate. The present invention relates to a method of producing sulfonylpyrrole compound (VIII), which includes reducing compound (III) and hydrolyzing the reduced product to give compound (IV), subjecting compound (IV) to a sulfonylation reaction to give compound (VI), and subjecting compound (VI) to an amination reaction. ##STR00001##

The present invention provides a production method of a sulfonylpyrrole compound useful as a pharmaceutical product, a production method of an intermediate used for the method, and a novel intermediate. The present invention relates to a method of producing sulfonylpyrrole compound (VIII), which includes reducing compound (III) and hydrolyzing the reduced product to give compound (IV), subjecting compound (IV) to a sulfonylation reaction to give compound (VI), and subjecting compound (VI) to an amination reaction. ##STR00001##

Compounds of formula (I), wherein R.sub.1 is as defined in the claims, exhibit COMT enzyme inhibiting activity and are thus useful as COMT inhibitors. Methods of treatment and pharmaceutical dosage forms are also disclosed.