Patent ID: 7368578

Claim:
A compound represented by the formula: wherein R1 is an optionally substituted oxazolyl group; X, Y and V are the same or different and each is a bond, an oxygen atom, a sulfur atom, —CO—, —CS—, —SO—, —SO 2 —, —CR 3 (OR 4 )—, —NR 5 —, —CONR 6 —, —NR 6 CO—, —CSNR 6 —, —NR 6 CS— or —CONR 6 NR 7 — (R 3 is a hydrogen atom or an optionally substituted hydrocarbon group, R 4 is a hydrogen atom or a hydroxyl-protecting group, R 5 is a hydrogen atom, an optionally substituted hydrocarbon group or an amino-protecting group, and R 6 and R 7 are the same or different and each is a hydrogen atom or an optionally substituted hydrocarbon group); Q is a divalent hydrocarbon group having 1 to 20 carbon atoms; ring A is a benzene ring optionally further having 1 to 3 substituents; Z is —(CH 2 ) n -Z 1 - or -Z 1 -(CH 2 ) n — (n is an integer of 1 to 8 and Z 1 is an oxygen atom); ring B is a pyrazole ring optionally further having 1 to 3 substituents; W is a bond or a divalent hydrocarbon group having 1 to 20 carbon atoms; and R 2 is —PO(OR 9 )(OR 10 ) (R 9 and R 10 are the same or different and each is a hydrogen atom or an optionally substituted hydrocarbon group, or R 9 and R 10 are optionally bonded to form an optionally substituted ring) or an optionally substituted thiazolyl group, provided that 1) ring A and ring B do not have a substituent represented by the formula: -Wa-(C═O)—R a [Wa is a saturated divalent hydrocarbon group having 1 to 20 carbon atoms and R a is —OR b (R b is a hydrogen atom or an optionally substituted hydrocarbon group) or —NR c R d (R c and R d are the same or different and each is a hydrogen atom, an optionally substituted hydrocarbon group, an optionally substituted heterocyclic group or an acyl group, and R c and R d are optionally bonded to form an optionally substituted ring together with the adjacent nitrogen atom)], 2) ring B does not have, on a ring-constituting N atom, a substituent represented by the formula: wherein R 1a is an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group; Xa and Ya are the same or different and each is a bond, an oxygen atom, a sulfur atom, —CO—, —CS—, —SO—, —SO 2 —, —CR 3a (OR 4a )—, —NR 5a —, —CONR 6a — or —NR 6a CO— (R 3a is a hydrogen atom or an optionally substituted hydrocarbon group, R 4a is a hydrogen atom or a hydroxyl-protecting group, R 5a is a hydrogen atom, an optionally substituted hydrocarbon group or an amino-protecting group, R 6a is a hydrogen atom or an optionally substituted hydrocarbon group); Qa is a divalent hydrocarbon group having 1 to 20 carbon atoms; ring Aa is an aromatic ring optionally further having 1 to 3 substituents; na is an integer of 1 to 8; and Yb is an oxygen atom, a sulfur atom or —NR 6a — (R 6a is as defined above), 3) —X-Q-Y— is not —(CH 2 )na- (na is an integer of 1 to 8), 4) when R 1 has a substituent represented by the formula: -Wa-(C═O)—R a (Wa and R a are as defined above), W is a divalent hydrocarbon group having 1 to 20 carbon atoms and V is a bond, or a salt thereof.