Intermolecular Regio- and Stereoselective Sulfenoamination of Alkenes with Thioimidazoles
作者:Nur-E Alom、Yesmin Akter Rina、Wei Li
DOI:10.1021/acs.orglett.7b03128
日期:2017.11.17
An intermolecular sulfenoamination reaction utilizing a stable sulfur precursor with a broad range of alkene structures is described. More importantly, these reactions proceed in a highly regio- and stereoselective manner to afford interesting heterocyclic motifs ready for biological studies. In addition, a highly regiodivergent approach to access the opposite regioisomers for styrene derivatives was
This invention relates to pharmaceutical compositions comprising compounds of formula
or a pharmaceutically acceptable saltthereofwherein-B-B1- represents a chain of formula
or
or
R represents an optionally substituted aryl or heteroaryl radical,
R', R2, R3 and R4 independently represent hydrogen, or a defined substituent or any adjacent pair of R', R2, R3 and R4 together with the carbon atoms to which they are attached complete a five or six membered saturated or unsaturated carbocyclic or heterocyclic ring, said ring being optionally substituted by a defined substituentand said heterocyclic ring having at least one heteroatom selected from oxygen, nitrogen and sulphur;
R5 and R6 independently represent hydrogen or lower alkyl; n and m independently represent 0 or 1, providing that when -B-B'- has formula la, n is 1 and m is O then R is heteroaryl, the term "heteroaryl" means a monovalent aromatic heterocyclic group in which the ring heteroatom or atoms is/are selected from oxygen, nitrogen and sulphur; and a pharmaceutically acceptable carrier which have anti-uicer and/or anti-secretory activity. Novel compounds of formula I are also disclosed together with processes for preparing them.
KRASOVSKIJ, A. N.;KLYUEV, N. A.;ROMAN, A. B.;KOCHERGIN, P. M.;DANK, E. X., XIMIYA GETEROTSIKL. SOEDIN., 1983, N 7, 942-947
作者:KRASOVSKIJ, A. N.、KLYUEV, N. A.、ROMAN, A. B.、KOCHERGIN, P. M.、DANK, E. X.
DOI:——
日期:——
US4873237A
申请人:——
公开号:US4873237A
公开(公告)日:1989-10-10
2,3-dihydro- thiazolo- and thiazino- benzimidazoles as atni-hyper
申请人:John Wyeth & Brother Limited
公开号:US04873237A1
公开(公告)日:1989-10-10
The invention relates to a method of treatment of ulcers or hypersecretion in a mammal which comprises administering a compound of formula ##STR1## or a pharmaceutically acceptable salt thereof wherein --B--B.sup.1 -- represents a chain of formula --(CHR.sup.5).sub.n --CHR.sup.6 -- (Ia) R represents an optionally substituted aryl or heteroaryl radical, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently represent hydrogen, or a defined substituent or any adjacent pair of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 together with the carbon atoms to which they are attached complete a five or six membered saturated or unsaturated carbocyclic or heterocyclic ring, said ring being optionally substituted by a defined substituent and said heterocyclic ring having at least one heteroatom selected from oxygen, nitrogen and sulphur; R.sup.5 and R.sup.6 independently represent hydrogen or lower alkyl; n and m independently represent 0 or 1, the term "heteroaryl" means a monovalent aromatic heterocyclic group in which the ring heteroatom or atoms is/are selected from oxygen, nitrogen and sulphur. Novel Compositions and compounds of formula I are also disclosed.