| 摘要 |
A method for producing a compound of formula (I), which comprises reducing a compound of formula (II) with a hydrazine compound: wherein R103, R113, R123, R133, R143, R203, R213, R223, R233 and R243 represent a substituent; the other Rs represent H, an aliphatic group or an aromatic group; and n103 to n243 are 0 to 4.
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