In this paper, we report a work in progress on transforming syntactic structures from the Syn-TagRus corpus into tectogrammatical trees in the Prague Dependency Treebank (PDT) style. SynTagRus (Russian) and PDT (Czech) are both dependency treebanks sharing lots of common features and facing similar linguistic challenges due to the close relatedness of the two languages. While in PDT the tectogrammatical representation exists, sentences in SynTagRus are annotated on syntactic level only. annotation layers: the morphological layer, the analytical layer (describing the surface syntax) and the tectogrammatical layer (describing the deep syntax – transition between syntax and semantics). A highly simplified example of the annotation layers is in Figure