2,6-dioxaspiro [4,5] decane derivatives and preparation method therefor and pharmaceutical applications thereof
申请人:SHANDONG LUYE PHARMACEUTICAL CO., LTD.
公开号:US11124523B2
公开(公告)日:2021-09-21
The present invention relates to a series of 2,6-dioxaspiro [4,5] decane derivatives and applications thereof in preparation of opiate receptor μ agonist related drugs; and in particular relates to the derivative compounds shown in formula (I), tautomers thereof or pharmaceutically acceptable compositions thereof.
2,6-DIOXASPIRO [4,5] DECANE DERIVATIVES AND PREPARATION METHOD THEREFOR AND PHARMACEUTICAL APPLICATIONS THEREOF
申请人:SHANDONG LUYE PHARMACEUTICAL CO., LTD.
公开号:US20200255444A1
公开(公告)日:2020-08-13
The present invention relates to a series of 2,6-dioxaspiro [4,5] decane derivatives and applications thereof in preparation of opiate receptor p agonist related drugs; and in particular relates to the derivative compounds shown in formula (I), tautomers thereof or pharmaceutically acceptable compositions thereof.
Multicomponent Reactions: Synthesis of Spirocyclic Tetrahydropyran Derivatives by Prins Cyclization
作者:Arun K. Ghosh、Dongwoo Shin、Gary Schiltz
DOI:10.3987/com-02-s(m)63
日期:——
Substituted spirocyclic tetrahydropyranyl mesylates and tosylates have been synthesized in good yields using a Prins-type cyclization of various cyclic ketones, a homoallylic alcohol and either methanesulfonic or p-toluenesulfonic acid under non-aqueous conditions. The mesylates thus produced could then be transformed into the corresponding Boc-protected amines using an efficient two step procedure