A synthetic approach to (+)-aldosterone and its relatives (2)- a stereoselective synthesis of (+)--4,5-(4-methoxybenzo)- 1β , 7aβ - ( 2α-methoxymethyl- 5 -oxofuro) hydrindane |
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Authors: | Hideo Nemoto Mitsuo Nagai Keiichiro Fukumoto Tetsuji Kametani |
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Affiliation: | Pharmaceutical Institute, Tohoku University, Aobayama, Sendai 980, Japan;Institute of Medicinal Chemistry, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo 142, Japan |
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Abstract: | A stereoselectivity in an intramolecular cycloaddition of the olefinic -quinodimethanes 13 and 23 generated from the thermolysis of optically active 4β-[2-(4-methoxybenzocyclobutenyl)ethyl] -5α-methoxymethyl-3-phenyl-thio-methylenefuran-2-ones 12 and 22, respectively, is studied and a stereoselective synthesis of (+)--4,5-( 4-methoxybenzo) -1β,7aβ-(2α-methoxymethyl-5-oxofuro)hydrindane 1 is also described. |
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