The present invention relates to tripartite compounds comprising a modulator moiety for endosomal G protein-coupled receptors like neurokinin-1 receptor, a linker and a lipid anchor suitable for anchoring the tripartite compound into a plasma membrane. The present invention also relates to a prodrug and a pharmaceutical composition comprising the tripartite compound and the use of the tripartite compound for the treatment of a disease or disorder mediated by endosomal G protein-coupled receptors signalling like NK1R signalling.