The invention relates to derivatives of formula (I), wherein the substituents are as defined in the specification; to processes for the preparation of such derivatives; pharmaceutical compositions comprising such derivatives; such derivatives as a medicament; such derivatives for the treatment of a disorder or a disease mediated by the ghrelin receptor.本発明は、式(I)の誘導体:(I)(式中、置換基は明細書に規定されたとおりである);かかる誘導体の製造方法;かかる誘導体を含む医薬組成物;医薬としてのかかる誘導体;グレリン受容体を介在する障害または疾患の処置のためのかかる誘導体に関する。