[EN] ASGPR-BINDING COMPOUNDS FOR THE DEGRADATION OF EXTRACELLULAR PROTEINS<br/>[FR] COMPOSÉS SE LIANT À L'ASGPR POUR LA DÉGRADATION DE PROTÉINES EXTRACELLULAIRES
申请人:AVILAR THERAPEUTICS INC
公开号:WO2021155317A1
公开(公告)日:2021-08-05
Compounds and compositions that have an asialoglycoprotein receptor (ASGPR) binding ligand bound to an extracellular protein binding ligand for the selective degradation of the target extracellular protein in vivo to treat disorders mediated by the extracellular protein are described.
1° L'autoxydationdel'éthyl-2-hexène-2-al, aldéhyde non saturé en α,β et ramifié en α, fournit comme acides caractéristiques: 1° l'éthyl-2-époxy-2,3-hexanoïque; 2° l'éthyl-2-hexène-2-oïque.
Ultraviolet irradiation apparatus for photochemical reaction and preparation process of vitamin D derivative making use of the same
申请人:CHUGAI SEIYAKU KABUSHIKI KAISHA
公开号:US20040108198A1
公开(公告)日:2004-06-10
Disclosed herein are an ultraviolet irradiation apparatus for photochemical reactions which can irradiate the photo-reactive solution with ultraviolet rays having a specific wavelength suitable for the intended photochemical reaction at a high efficiency, and a process by which a provitamin D derivative can be converted into a provitamin D derivative at a high efficiency by means of a photochemical reaction by one-step process of light irradiation, thereby preparing a vitamin D derivative at a high efficiency.
The ultraviolet irradiation apparatus irradiates the photo-reactive solution with the ultraviolet rays having the specific wavelength through a quartz rod. Specifically, the apparatus is constructed by an electric discharge lamp, a condensing and reflecting mirror and a plane mirror both having wavelength selective property, an optical filter which transmits the ultraviolet rays having the specific wavelength, and a quartz rod on which the ultraviolet rays having the specific wavelength are struck. The photo-reactive solution is irradiated with the ultraviolet rays from the quartz rod. The quartz rod is immersed in the photo-reactive solution, or a reaction vessel is irradiated with the ultraviolet rays from the quartz rod.
In the preparation process of the vitamin D derivative, an ultraviolet irradiation apparatus for photochemical reactions having an ultraviolet radiation-emitting lamp, an optical system having wavelength selective property and a quartz rod on which the ultraviolet rays having the specific wavelength from the optical system are struck is used, and a solution of a provitamin D derivative is irradiated with the ultraviolet rays having the specific wavelength emitted from the quartz rod to cause a photochemical reaction of the provitamin D derivative solution, thereby forming a previtamin D derivative. The previtamin D derivative is further subjected to a thermal isomerization reaction to prepare the vitamin D derivative.