On a Novel Chromanone−Naphthalenetrione Rearrangement Related to Vitamin E
摘要:
[GRAPHIC]4-Oxo-alpha-tocopherol (7) was synthesized in an efficient three-step procedure starting from alpha-tocopheryl acetate (1b) and rearranged under physiological conditions into naphthalenetrione 4, a minor vitamin E metabolite. The rearrangement involves a [4 + 2]-cycloaddition as the key step.
On a Novel Chromanone−Naphthalenetrione Rearrangement Related to Vitamin E
摘要:
[GRAPHIC]4-Oxo-alpha-tocopherol (7) was synthesized in an efficient three-step procedure starting from alpha-tocopheryl acetate (1b) and rearranged under physiological conditions into naphthalenetrione 4, a minor vitamin E metabolite. The rearrangement involves a [4 + 2]-cycloaddition as the key step.
[EN] NOVEL SYNTHESIS OF INTERMEDIATES FOR THE PREPARATION OF ALPHA-TOCOPHEROL<br/>[FR] NOUVELLE SYNTHÈSE D'INTERMÉDIAIRES DESTINÉS À LA PRÉPARATION D'ALPHA-TOCOPHÉROL
申请人:DSM IP ASSETS BV
公开号:WO2019012000A1
公开(公告)日:2019-01-17
The present invention relates to a novel synthetic pathway for alpha- tocopherol. The invention discloses different reactions yielding some new intermediates in a very high yield and stereoselectivity.
NOVEL SYNTHESIS OF INTERMEDIATES FOR THE PREPARATION OF ALPHA-TOCOPHEROL
申请人:DSM IP Assets B.V.
公开号:US20200131145A1
公开(公告)日:2020-04-30
The present invention relates to a novel synthetic pathway for alpha-tocopherol. The invention discloses different reactions yielding some new intermediates in a very high yield and stereoselectivity.
SYNTHESIS OF INTERMEDIATES FOR THE PREPARATION OF ALPHA-TOCOPHEROL
申请人:DSM IP Assets B.V.
公开号:US20210300886A1
公开(公告)日:2021-09-30
The present invention relates to a novel synthetic pathway for alpha-tocopherol. The invention discloses different reactions yielding some new intermediates in a very high yield and stereoselectivity.
On a Novel Chromanone−Naphthalenetrione Rearrangement Related to Vitamin E
[GRAPHIC]4-Oxo-alpha-tocopherol (7) was synthesized in an efficient three-step procedure starting from alpha-tocopheryl acetate (1b) and rearranged under physiological conditions into naphthalenetrione 4, a minor vitamin E metabolite. The rearrangement involves a [4 + 2]-cycloaddition as the key step.