new sulfur analogues of lysophospholipids has been described, including phosphorothioate/phosphorodithioate derivatives of lysophosphatidic acids (LPA) and phosphorothioate/phosphorodithioate derivatives of cyclic phosphatidic acids (cPA). For the preparation of LPA and cPA derivatives both oxathiaphospholane and dithiaphospholane approaches have been employed. Each lysophospholipid analogue has been