Novel heterocyclic compounds of the formula I
in which R1, R2, R3, R4, R5, R6, R7, Alk and D have the meanings indicated in claim 1, 
are activators of glucokinase and can be used for the prevention and/or treatment of Diabetes Typ 1 and 2, obesity, neuropathy and/or nephropathy.
                            式I中的新型
杂环化合物,其中R1、R2、R3、R4、R5、R6、R7、Alk和D具有权利要求书1中所示的含义,是
葡萄糖激酶的激活剂,可用于预防和/或治疗1型和2型糖尿病、肥胖症、神经病和/或肾病。