Compounds, tautomers and pharmaceutically acceptable salts of the compounds are disclosed, wherein the compounds have the structure of Formula Ia, ##STR00001##
as defined in the specification. Corresponding pharmaceutical compositions, methods of treatment, methods of synthesis, and intermediates are also disclosed.

Disclosed are compounds of Formulas (I), (II), (III), (IV), and (V): ##STR00001##
and/or a salt thereof, wherein R.sub.1 is —OH or —OP(O)(OH).sub.2, and X.sub.1, X.sub.2, X.sub.3, R.sub.2, R.sub.2a, R.sub.a, R.sub.b, and R.sub.c are defined herein. Also disclosed are methods of using such compounds as selective agonists for G protein-coupled receptor S1P.sub.1, and pharmaceutical compositions comprising such compounds. These compounds are useful in treating, preventing, or slowing the progression of diseases or disorders in a variety of therapeutic areas, such as autoimmune diseases and vascular disease.

Disclosed are compounds of Formulas (I), (II), (III), (IV), and (V): ##STR00001##
and/or a salt thereof, wherein R.sub.1 is —OH or —OP(O)(OH).sub.2, and X.sub.1, X.sub.2, X.sub.3, R.sub.2, R.sub.2a, R.sub.a, R.sub.b, and R.sub.c are defined herein. Also disclosed are methods of using such compounds as selective agonists for G protein-coupled receptor S1P.sub.1, and pharmaceutical compositions comprising such compounds. These compounds are useful in treating, preventing, or slowing the progression of diseases or disorders in a variety of therapeutic areas, such as autoimmune diseases and vascular disease.

Provided are ion channel antagonists/blockers and uses thereof. Specifically, it provides the compounds of formula (I) or pharmaceutically acceptable salts, stereoisomers, solvates or prodrugs, preparation method therefor and application thereof. Definition of each group in the formula can be found in the specification for details. Provided is also pharmaceutical composition useful for treatment of heart disease and other ion channel related diseases.

##STR00001##

Provided are ion channel antagonists/blockers and uses thereof. Specifically, it provides the compounds of formula (I) or pharmaceutically acceptable salts, stereoisomers, solvates or prodrugs, preparation method therefor and application thereof. Definition of each group in the formula can be found in the specification for details. Provided is also pharmaceutical composition useful for treatment of heart disease and other ion channel related diseases.

##STR00001##

Compounds that have antiallergic and/or anti-inflammatory properties and methods of making thereof are disclosed. These compounds can block MMRGPRX2 and prevent or reduce mast cells activation. Pharmaceutical formulations in a unit dosage form suitable for the delivery of the compounds to a subject in need thereof are disclosed. The pharmaceutical formulations may include one or more active agents in addition to the compounds, such as one or more additional antiallergic and/or anti-inflammatory agents. The pharmaceutical formulation can be administered by oral administration, parenteral administration, inhalation, mucosal administration, or a combination thereof. Methods for preventing or treating pseudo allergic reactions, pseudo allergic diseases, and/or pseudo inflammatory diseases, or treating or ameliorating one or more symptoms associated with a pseudo allergic reaction, a pseudo allergic disease, and/or a pseudo inflammatory disease in a subject are also disclosed.

Compounds that have antiallergic and/or anti-inflammatory properties and methods of making thereof are disclosed. These compounds can block MMRGPRX2 and prevent or reduce mast cells activation. Pharmaceutical formulations in a unit dosage form suitable for the delivery of the compounds to a subject in need thereof are disclosed. The pharmaceutical formulations may include one or more active agents in addition to the compounds, such as one or more additional antiallergic and/or anti-inflammatory agents. The pharmaceutical formulation can be administered by oral administration, parenteral administration, inhalation, mucosal administration, or a combination thereof. Methods for preventing or treating pseudo allergic reactions, pseudo allergic diseases, and/or pseudo inflammatory diseases, or treating or ameliorating one or more symptoms associated with a pseudo allergic reaction, a pseudo allergic disease, and/or a pseudo inflammatory disease in a subject are also disclosed.

Disclosed herein, inter alia, are inhibitors of alpha 2 beta 1 integrin and methods of using the same.

Disclosed herein are new antiviral compounds, together with pharmaceutical compositions that include one or more antiviral compounds, and methods of synthesizing the same. Also disclosed herein are methods of ameliorating and/or treating a paramyxovirus viral infection with one or more small molecule compounds. Examples of paramyxovirus infection include an infection caused by human respiratory syncytial virus (RSV).

Disclosed herein are new antiviral compounds, together with pharmaceutical compositions that include one or more antiviral compounds, and methods of synthesizing the same. Also disclosed herein are methods of ameliorating and/or treating a paramyxovirus viral infection with one or more small molecule compounds. Examples of paramyxovirus infection include an infection caused by human respiratory syncytial virus (RSV).