Patent ID: 6844354

Claim:
A method for treatment of interstitial pneumonia and pulmonary fibrosis, which comprises administering an effective amount of a compound having a Rho kinase inhibitory activity to a patient, wherein the compound having a Rho kinase inhibitory activity is an amide compound of the following formula (I), wherein Ra is a group of the formula in the formulas (a) and (b), R is hydrogen, alkyl, or cycloalkyl, cycloalkylalkyl, phenyl or aralkyl, which optionally has a substituent on the ring, or a group of the formula wherein R 6 is hydrogen, alkyl or the formula: —NR 8 R 9 wherein R 8 and R 9 are the same or different and each is hydrogen, alkyl, aralkyl or phenyl, R 7 is hydrogen, alkyl, aralkyl, phenyl, nitro or cyano, or R 6 and R 7 in combination show a group forming a heterocycle optionally having, in the ring, oxygen atom, sulfur atom or optionally substituted nitrogen atom, R 1 is hydrogen, alkyl, or cycloalkyl, cycloalkylalkyl, phenyl or aralkyl, which optionally has a substituent on the ring, or R and R 1 in combination form, together with the adjacent nitrogen atom, a group forming a heterocycle optionally having, in the ring, oxygen atom, sulfur atom or optionally substituted nitrogen atom, R 2 is hydrogen or alkyl, R 3 and R 4 are the same or different and each is hydrogen, alkyl, aralkyl, halogen, nitro, amino, alkylamino, acylamino, hydroxy, alkoxy, aralkyloxy, cyano, acyl, mercapto, alkylthio, aralkylthio, carboxy, alkoxycarbonyl, carbamoyl, alkylcarbamoyl or azide, and A is a group of the formula wherein R 10 and R 11 are the same or different and each is hydrogen, alkyl, haloalkyl, aralkyl, hydroxyalkyl, carboxy or alkoxycarbonyl, or R 10 and R 11 show a group which forms cycloalkyl in combination and l, m and n are each 0 or an integer of 1-3, in the formula (c), L is hydrogen, alkyl, aminoalkyl, mono- or dialkylaminoalkyl, tetrahydrofurfuryl, carbamoylalkyl, phthalimidoalkyl, amidino or a group of the formula wherein B is hydrogen, alkyl, alkoxy, aralkyl, aralkyloxy, aminoalkyl, hydroxyalkyl, alkanoyloxy-alkyl, alkoxycarbonylalkyl, α-aminobenzyl, furyl, pyridyl, phenyl, phenylamino, styryl or imidazopyridyl, Q 1 is hydrogen, halogen, hydroxy, aralkyloxy or thienylmethyl, W is alkylene, Q 2 is hydrogen, halogen, hydroxy or aralkyloxy, X is alkylene, Q 3 is hydrogen, halogen, hydroxy, alkoxy, nitro, amino, 2,3-dihydrofuryl or 5-methyl-3-oxo-2,3,4,5-tetrahydropyridazin-6-yl; and Y is a single bond, alkylene or alkenylene, and in the formula (c), a broken line is a single bond or a double bond, and R 5 is hydrogen, hydroxy, alkoxy, alkoxycarbonyloxy, alkanoyloxy or aralkyloxycarbonyloxy; Rb is a hydrogen, an alkyl, an aralkyl, an aminoalkyl or a mono- or dialkylaminoalkyl; and Rc is an optionally substituted heterocycle containing nitrogen, an isomer thereof and/or a pharmaceutically acceptable acid addition salt thereof.