NOVEL INTERMEDIATE COMPOUNDS FOR SYNTHESIS OF VITAMIN D DERIVATIVES

摘要

FIELD: organic chemistry, chemical technology, vitamins. ^ SUBSTANCE: invention relates to novel intermediate compounds used for synthesis of derivatives of vitamin D and represented by the formula (I): wherein Y1 represents hydrogen atom or tert.-butyldimethylsilyl group; Y2 represents tert.-butyldimethylsilyl group; Y3 represents hydrogen atom or tetrahydro-2-pyranyl group wherein Y3O-group is in R-configuration; R1 and R2 are bound and form methylene group. Except for, invention relates to novel compounds represented by the formula (II): wherein Y2 represents tert.-butyldimethylsilyl group; Y3 represents hydrogen atom or tetrahydro-2-pyranyl group and Y3O-group is in R-configuration. These compounds are used as intermediate substances for synthesis of compounds of the formula (I). ^ EFFECT: valuable properties of intermediate compounds. ^ 8 cl, 1 dwg, 8 ex