Patent ID: 8129535

Claim:
An alkyl ether derivative represented by the general formula, or its salts: wherein each of R 1 and R 2 , which may be the same or different, represents one or more groups selected from a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl, aryl, aralkyl, alkoxy, aryloxy, alkylthio, arylthio, alkenyl , alkenyloxy, amino, alkylsulfonyl, arylsulfonyl, carbamoyl or heterocyclic group, a protected or unprotected amino, hydroxyl or carboxyl group, a nitro group, and an oxo group; R 3 is a substituted or unsubstituted alkylamino group, or a protected or unprotected amino or hydroxyl group; the ring A is a furan ring; each of m and n is an integer of 1 to 6; and p is an integer of 2.