| 摘要 |
A novel process for the preparation of tricyclic amino alcohol derivatives o f general formula (1) or salts thereof which are useful in the treatment and prevention of diabetes, obesity, hyperlipemia and so on; and intermediates useful in the process: wherein R1 is lower alkyl or benzyl; *1 represents an asymmetric carbon atom; R2 is hydrogen, halogeno, or hydroxyl; and A is a substituent represented by general formula (2) or (3): (wherein X is NH, O o r S; R6 is hydrogen, hydroxyl, amino, or acetylamino; and *2 represents an asymmetric carbon atom when R6 is not hydrogen).
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