| 摘要 |
Compounds are disclosed of formula (1), wherein R<1> is hydrogen or hydroxy, R<2> is hydrogen or methyl, R<3> is hydrogen or methyl, n is 1, 2 or 3, and R is n-alkyl C1-3, n-alkenyl C2-3, cyclopropylmethyl, 2-pyridyl, 3-pyridyl or -C6H4-R<4> (where R<4> is hydrogen or hydroxy): their non-toxic salts, processes for their preparation. Also described is a method of treating diabetes and the use of the compounds for the manufacture of a medicament for the treatment of diabetes. |
