Preparation of a novel 16-DPA-P<sub>2</sub>S<sub>5</sub> adduct and its application as a masked α,β-unsaturated ketone in [4+2]cycloaddition reactions期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Preparation of a novel 16-DPA-P₂S₅ adduct and its application as a masked α,β-unsaturated ketone in [4+2]cycloaddition reactions

Authors:	Apurba ChetiaAnil Saikia Chandan J SaikiaRomesh C Boruah

Institution:	Medicinal Chemistry Division, Regional Research Laboratory, Jorhat 785006, India

Abstract:	The reaction of 16-DPA with P₄S₁₀ in refluxing benzene afforded a novel adduct 16-DPA-P₂S₅ instead of the expected thione. The adduct undergoes 4+2]cycloaddition with alkyne dienophiles to afford steroidal (17,16-c)pyrans.

Keywords:	16-Dehydropregnenolone acetate tetraphosphorous decasulfide [4+2]cycloaddition steroidal (17 16-c)pyran
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