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Isolation of a C27-sterol with a unique side-chain from a starfish, Leiaster leachii.

Shin‐ichi Teshima, Akio Kanazawa, Tetsuo Ando

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Abstract

A C27-sterol with a unique side-chain was isolated from a starfish, Leiaster leachii. The sterol was isolated from the complex sterol mixture of the starfish by using column chromatography on silver nitrate-impregnated silicic acid with hexane-benzene. The structure of this sterol was elucidated by gas-liquid chromatography, infrared absorption, mass, and nuclear magnetic resonance spectrometry. As a result, this sterol was identical with amuresterol, 22-trans-27-nor-(24S)-24-methylcholesta-7, 22-dien-3β-ol, a new sterol which had been quite recently isolated from another species of starfish, Asterias amurensis.

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What this paper is about

A C27-sterol with a unique side-chain was isolated from a starfish, Leiaster leachii. The sterol was isolated from the complex sterol mixture of the starfish by using column chromatography on silver nitrate-impregnated silicic acid with hexane-benzene. The structure of this sterol was elucidated by gas-liquid chromatography, infrared absorption, mass, and nuclear magnetic resonance spectrometry. As a result, this sterol was identical with amuresterol, 22-trans-27-nor-(24S)-24-methylcholesta-7, 22-dien-3β-ol, a new sterol which had been quite recently isolated from another species of starfish, Asterias amurensis.

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Available abstract

A C27-sterol with a unique side-chain was isolated from a starfish, Leiaster leachii. The sterol was isolated from the complex sterol mixture of the starfish by using column chromatography on silver nitrate-impregnated silicic acid with hexane-benzene. The structure of this sterol was elucidated by gas-liquid chromatography, infrared absorption, mass, and nuclear magnetic resonance spectrometry. As a result, this sterol was identical with amuresterol, 22-trans-27-nor-(24S)-24-methylcholesta-7, 22-dien-3β-ol, a new sterol which had been quite recently isolated from another species of starfish, Asterias amurensis.

Key concepts: Starfish, Sterol, Silicic acid, Biology, Side chain, Chemistry, Biochemistry, Chromatography

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Isolation of a C27-sterol with a unique side-chain from a starfish, Leiaster leachii. — Research Paper | ScholarLens