In one aspect, the invention relates to compounds having the formula:

##STR00001##

where R.sup.1-R.sup.6, a, b, and X are as defined in the specification, or a pharmaceutically acceptable salt thereof. These compounds have neprilysin inhibition activity. In another aspect, the invention relates to pharmaceutical compositions comprising such compounds; methods of using such compounds; and processes and intermediates for preparing such compounds.

Irreversible inhibitors of G12C mutant K-Ras protein are provided. Also disclosed are methods to modulate the activity of G12C mutant K-Ras protein and methods of treatment of disorders mediated by G12C mutant K-Ras protein.

Irreversible inhibitors of G12C mutant K-Ras protein are provided. Also disclosed are methods to modulate the activity of G12C mutant K-Ras protein and methods of treatment of disorders mediated by G12C mutant K-Ras protein.

A P2Y12 receptor antagonist containing a guanidyl, and a preparation method and the use thereof. In particular, the present disclosure provides a pyridazinone-guanidine compound that is a compound of structural formula (I), or a stereoisomer of the above-mentioned compound, a pro-drug thereof, a pharmaceutically acceptable salt thereof or a pharmaceutically acceptable solvate thereof. Such a compound has multiple pharmacological activities, especially has an inhibitory effect on platelet aggregation, and can be used for preparing an anti-platelet aggregation pharmaceutical composition.

A P2Y12 receptor antagonist containing a guanidyl, and a preparation method and the use thereof. In particular, the present disclosure provides a pyridazinone-guanidine compound that is a compound of structural formula (I), or a stereoisomer of the above-mentioned compound, a pro-drug thereof, a pharmaceutically acceptable salt thereof or a pharmaceutically acceptable solvate thereof. Such a compound has multiple pharmacological activities, especially has an inhibitory effect on platelet aggregation, and can be used for preparing an anti-platelet aggregation pharmaceutical composition.

In one aspect, the invention relates to compounds having the formula: ##STR00001##
where R.sup.1-R.sup.6, a, b, and X are as defined in the specification, or a pharmaceutically acceptable salt thereof. These compounds have neprilysin inhibition activity. In another aspect, the invention relates to pharmaceutical compositions comprising such compounds; methods of using such compounds; and processes and intermediates for preparing such compounds.

In one aspect, the invention relates to compounds having the formula: ##STR00001##
where R.sup.1-R.sup.6, a, b, and X are as defined in the specification, or a pharmaceutically acceptable salt thereof. These compounds have neprilysin inhibition activity. In another aspect, the invention relates to pharmaceutical compositions comprising such compounds; methods of using such compounds; and processes and intermediates for preparing such compounds.

The present invention relates to herbicidal substituted phenyl-pyridazine-diones and substituted phenyl-pyridazinone derivatives of formula (I), as well as to processes and intermediates used for the preparation of such derivatives. The invention further extends to herbicidal compositions comprising such derivatives, as well as to the use of such compounds and compositions in controlling undesirable plant growth: in particular the use in controlling weeds, such as broad-leaved dicotyledonous weeds, in crops of useful plants.

The present invention relates to herbicidal substituted phenyl-pyridazine-diones and substituted phenyl-pyridazinone derivatives of formula (I), as well as to processes and intermediates used for the preparation of such derivatives. The invention further extends to herbicidal compositions comprising such derivatives, as well as to the use of such compounds and compositions in controlling undesirable plant growth: in particular the use in controlling weeds, such as broad-leaved dicotyledonous weeds, in crops of useful plants.

The present invention relates to sanglifehrin macrocyclic analogues according to Formula (I), ##STR00001##
particularly for use in treatment of cancer, especially liver cancer.