Diterpenoids. XVI. Reduction of 6β-Hydroxy-enantio-podocarpa-8, 11, 13-trien-16-oic Acid Derivative

Tahara, Akira; Ohtsuka, Yasuo; Umino, Norihide; Nagasawa, Kazuo; Hirao, Kazuyuki

doi:10.1248/cpb.19.1756

CHEMICAL & PHARMACEUTICAL BULLETIN

1971

DOI: 10.1248/cpb.19.1756

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Diterpenoids. XVI. Reduction of 6β-Hydroxy-enantio-podocarpa-8, 11, 13-trien-16-oic Acid Derivative

Akira Tahara¹,

Yasuo Ohtsuka²,

Norihide Umino³

et al.

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1972

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ChemInform Abstract: DITERPENOIDE 16. MITT. DIE RED. EINES 6BETA‐HYDROXY‐ENANTIO‐PODOCARPA‐8,11,13‐TRIENCARBONSAEURE‐16‐DERIVATES

Tahara¹,

Ohtsuka²,

Umino³

et al. 1972

Chemischer Informationsdienst

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Bei der Reduktion der 6β‐Hydroxysäure (I) mit Lithium in einer Mischung aus tert.‐Amylalkohol und Äthylamin entsteht die Carbonsäure (II), die sich mit Diazomethan zu dem Methylester (III) und durch Acetylierung mit Acetylchlorid und Pyridin in die Verbindung (IV) umwandeln läßt. Bei einer erschöpfenden Hydrierung der Verbindungen (III) und (V), der Desoxyverbindungen (VIII) und (IX) und der Acetylderivate (IV) und (XII) unter verschiedenen Drücken werden die cis‐Verbindungen (VI), (X) und (XIII) bevorzugt bei hö= heren Drücken und die trans‐Verbindungen (VII), (XI) und (XIV) vor allem bei niedrigeren Drücken gebildet.

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ChemInform Abstract: DITERPENOIDE 16. MITT. DIE RED. EINES 6BETA‐HYDROXY‐ENANTIO‐PODOCARPA‐8,11,13‐TRIENCARBONSAEURE‐16‐DERIVATES

Tahara¹,

Ohtsuka²,

Umino³

et al. 1972

Chemischer Informationsdienst

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show abstract

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Diterpenoids. XVI. Reduction of 6β-Hydroxy-enantio-podocarpa-8, 11, 13-trien-16-oic Acid Derivative

Cited by 1 publication

References 0 publications

ChemInform Abstract: DITERPENOIDE 16. MITT. DIE RED. EINES 6BETA‐HYDROXY‐ENANTIO‐PODOCARPA‐8,11,13‐TRIENCARBONSAEURE‐16‐DERIVATES

ChemInform Abstract: DITERPENOIDE 16. MITT. DIE RED. EINES 6BETA‐HYDROXY‐ENANTIO‐PODOCARPA‐8,11,13‐TRIENCARBONSAEURE‐16‐DERIVATES

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