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Steroids. II

Masamoto Nishikawa, Katsura Morita, Hikoichi Hagiwara, Michitaka Inoue

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Abstract

Diosgenin, kryptogenin, and yamogenin are known as the sapogenins obtained from the plants of Dioscoreaceae but only diosgenin alone has been found in Dioscorea tokoro Makino. A small amount of crystals of m.p. 266°, [α]D: -49.6° (EtOH), was isolated from the rhizome of D. tokoro, besides diosgenin, and various reactions were carried out on this substance. As a result, it has been confirmed that this substance is an unknown iso-type trihydroxysteroidal sapogenin and was designated as tokorogenin.

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What this paper is about

Diosgenin, kryptogenin, and yamogenin are known as the sapogenins obtained from the plants of Dioscoreaceae but only diosgenin alone has been found in Dioscorea tokoro Makino. A small amount of crystals of m.p. 266°, [α]D: -49.6° (EtOH), was isolated from the rhizome of D. tokoro, besides diosgenin, and various reactions were carried out on this substance. As a result, it has been confirmed that this substance is an unknown iso-type trihydroxysteroidal sapogenin and was designated as tokorogenin.

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Available abstract

Diosgenin, kryptogenin, and yamogenin are known as the sapogenins obtained from the plants of Dioscoreaceae but only diosgenin alone has been found in Dioscorea tokoro Makino. A small amount of crystals of m.p. 266°, [α]D: -49.6° (EtOH), was isolated from the rhizome of D. tokoro, besides diosgenin, and various reactions were carried out on this substance. As a result, it has been confirmed that this substance is an unknown iso-type trihydroxysteroidal sapogenin and was designated as tokorogenin.

Key concepts: Diosgenin, Sapogenin, Dioscorea, Rhizome, Dioscoreaceae, Chemistry, Traditional medicine, Botany

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