Tetrahydrofuran derivatives having cis substituent, their intermediates, and their preparation method
申请人:Korea Institute of Science and Technology
公开号:US07388101B1
公开(公告)日:2008-06-17
The present invention relates to a tetrahydrofuran compound having cis substituents, the derivatives thereof and a process for preparing the same, and in particular relates to a dihydrofuran-3-ylidene triflate compound having cis substituents at C2 and C5 positions prepared through Prins-type cyclization using a homopropargylic alcohol derivative as a starting material in the presence of Lewis acid catalyst, a tetrahydrofuran compound having cis substituents at C2, C3 and C5 positions prepared through the hydrolysis of triflate group in the derivatives of the dihydrofuran-3-ylidene triflate compound, and a preparation method thereof.
The derivatives and the target tetrahydrofuran compound prepared according to the present invention are hydrofuran compounds with novel structures having cis substituents at C2, C3 and/or C5 positions, which are useful as a derivative for synthesizing drugs such as an antagonist for neurokinin receptor.
本发明涉及具有顺式取代基的四氢呋喃化合物,其衍生物以及制备该化合物的方法,特别涉及通过在路易斯酸催化剂存在下使用异丙炔醇衍生物作为起始物质通过普林斯型环化制备具有C2和C5位置顺式取代基的二氢呋喃-3-基亚三氟甲磺酸酯化合物,通过在二氢呋喃-3-基亚三氟甲磺酸酯化合物的衍生物中水解三氟甲磺酸酯基而制备具有C2、C3和C5位置顺式取代基的四氢呋喃化合物的制备方法。根据本发明制备的衍生物和目标四氢呋喃化合物是具有新颖结构的羟呋喃化合物,其在C2、C3和/或C5位置具有顺式取代基,可用作合成药物的衍生物,例如神经激肽受体拮抗剂。