The stereocontrolled photoaddition of allene to cyclopent-1-ene-1-carboxaldehydes. A total synthesis of (±) steviol methyl ester and isosteviol methyl ester |
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| Authors: | Frederick E. Ziegler James A. Kloek |
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| Affiliation: | Sterling Chemistry Laboratory, Yale University, New Haven, Connecticut 06520, U.S.A. |
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| Abstract: | The stereochemistry of the photoaddition of allene to hydroindenal 19 is explored. The stereochemistry is proven by conversion into steviol methyl ester 22b and isosteviol methyl ester 24. |
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