(untitled) - Fokin,A.A.; Butova,E.D.; Kolomitsin,I.V.; Gagaeva,E.A.; Goroman,I.V.; Kornilov,A.M.; Sorochinskii,A.E.; Yurchenko,A.G.; Krasutskii,P.A. (Zh. Org. Khim., 1994)