803723-51-5Relevant articles and documents
A DOUBLE DIELS-ALDER REACTION OF A C2-SYMMETRIC BIS-DIENOPHILE: A NEW ENANTIOSELECTIVE APPROACH TO NATURAL LOGANIN
Takano, Seiichi,Kurotaki, Ayako,Ogasawara, Kunio
, p. 3991 - 3992 (2007/10/02)
Reaction of a chiral C2-symmetric bis-dienophile 1 and cyclopentadiene gave a mixture (3:2) of adducts 2 and 3 of which the major one was converted into a key intermediate 12 of loganin.The formation of the adducts is presumed via the anti-Felkin-Anh type active conformers, 14 and 15, respectively.