The present invention relates to a novel ionizable lipid and a lipid nanoparticle composition using same, wherein it has been identified that the lipid nanoparticle composed of the novel ionizable lipid exhibits an excellent rate of gene encapsulation efficiency and of gene delivery efficacy in in vitro/in vivo system and, simultaneously, exhibits an excellent rate of gene delivery efficacy even in serum-free environments, and thus the present invention can be effectively used as a composition for drug delivery.

Provided are a compound for the prevention and treatment of diseases associated with PD-L1, a preparation method therefor and use thereof. Specifically, provided are the compound of formula I, the stereoisomer and the racemate thereof, or pharmaceutically acceptable salts thereof, and also provided is an application thereof in the preparation of a drug for the prevention and treatment of diseases associated with PD-L1. ##STR00001##

Provided are a compound for the prevention and treatment of diseases associated with PD-L1, a preparation method therefor and use thereof. Specifically, provided are the compound of formula I, the stereoisomer and the racemate thereof, or pharmaceutically acceptable salts thereof, and also provided is an application thereof in the preparation of a drug for the prevention and treatment of diseases associated with PD-L1. ##STR00001##

Described herein are compounds that inhibits the membrane proximal external region (MPER) of a viral envelope (Env), as well as and compositions thereof. Further provided herein are methods for treating or preventing a viral infection comprises administering to a subject in need thereof an agent or compound that inhibits the MPER of a viral Env. In certain embodiments, the viral infection is an HIV infection.

Compounds that inhibit HIF-2α, and compositions containing the compound(s) and methods for synthesizing the compounds, are described herein. Also described are the use of such compounds and compositions for the treatment of a diverse array of diseases, disorders, and conditions, including cancer- and immune-related disorders that are mediated, at least in part, by HIF-2α.

Compounds that inhibit HIF-2α, and compositions containing the compound(s) and methods for synthesizing the compounds, are described herein. Also described are the use of such compounds and compositions for the treatment of a diverse array of diseases, disorders, and conditions, including cancer- and immune-related disorders that are mediated, at least in part, by HIF-2α.

Provided herein are solid forms comprising a compound of formula (I), or a stereoisomer, or a mixture of stereoisomers thereof, or a pharmaceutically acceptable salt thereof. Also provided herein are methods of synthesizing a compound of formula (I), pharmaceutical compositions comprising the same, and methods of treating, preventing, and managing various disorders using the compositions provided herein.

The present invention relates to novel herbicidally active compounds, agrochemical composition thereof, methods of preparation thereof, and uses thereof for controlling the growth of undesirable plants (e.g., weeds), for example in crop fields.

The present invention relates to novel herbicidally active compounds, agrochemical composition thereof, methods of preparation thereof, and uses thereof for controlling the growth of undesirable plants (e.g., weeds), for example in crop fields.

A novel amino acid derivative is provided, wherein the amino acid derivative is expected to improve binding affinity of polypeptides comprising the derivative therein.