(+)-ESTRONE DERIVATIVE

(+)-ESTRONE DERIVATIVE

PROBLEM TO BE SOLVED: To provide an intermediate capable of giving a (+)-estrone derivative from a dicyclopentadiene derivative with small number of steps in high total yield. SOLUTION: The objective compound of formula (R is a 1-20C alkyl) can be produced by using (-)-tricyclo[5.2.1.02.6]deca-4,8-d...

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Hauptverfasser: TAKANO SEIICHI, OGASAWARA KUNIRO
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
STEROIDS
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creator TAKANO SEIICHI
OGASAWARA KUNIRO
description PROBLEM TO BE SOLVED: To provide an intermediate capable of giving a (+)-estrone derivative from a dicyclopentadiene derivative with small number of steps in high total yield. SOLUTION: The objective compound of formula (R is a 1-20C alkyl) can be produced by using (-)-tricyclo[5.2.1.02.6]deca-4,8-dien-3-one as a starting substance and carrying out asymmetric Diels-Alder reacting with a 4-vinyl-7- alkoxy-1,2-dihydronaphthalene. The derivative of the compound can be produced by subjecting the product to successive reaction steps.
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SOLUTION: The objective compound of formula (R is a 1-20C alkyl) can be produced by using (-)-tricyclo[5.2.1.02.6]deca-4,8-dien-3-one as a starting substance and carrying out asymmetric Diels-Alder reacting with a 4-vinyl-7- alkoxy-1,2-dihydronaphthalene. 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METALLURGY
ORGANIC CHEMISTRY
STEROIDS
title (+)-ESTRONE DERIVATIVE
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