(3SR, 4RS)-3-((RS)-1-hydroxyethyl)- and -((RS)-1-acyloxyethyl)-2-oxo-4-azetidineacetic acid compounds and a process for preparing the same
申请人:Merck & Co., Inc.
公开号:EP0032400A1
公开(公告)日:1981-07-22
Disclosed is a process comprising the steps of treating a compound of the formula:
with a carboxylic acid R4CO2H in the presence of a triorganophosphine and an activating agent therefor to prepare a compound of the formula:
followed by hydrolysis to cleave COR4; wherein R' is hydrogen or a readily removable protecting group and R4CO is a readily removable acyl radical.
This process can be used for the stereocontrolled total synthesis of thienamycin.
申请人:IUCF-HYU (Industry-University Cooperation
Foundation Hanyang University)
公开号:EP3336098A1
公开(公告)日:2018-06-20
The present disclosure is directed to providing a new skin-penetrating peptide, a fusion product with a biologically active substance bound using the same, a cosmetic composition containing the same and a pharmaceutical composition for external application to skin containing the same. The skin-penetrating peptide of the present disclosure is less likely to cause an immune response as compared to existing skin-penetrating peptides and exhibits remarkably improved skin permeability. Therefore, the biologically active substance can be effectively delivered through the skin, particularly through the stratum corneum.
Skin-penetrating peptide and method for using same
申请人:IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
公开号:US10858395B2
公开(公告)日:2020-12-08
The present disclosure is directed to providing a new skin-penetrating peptide, a fusion product with a biologically active substance bound using the same, a cosmetic composition containing the same and a pharmaceutical composition for external application to skin containing the same. The skin-penetrating peptide of the present disclosure is less likely to cause an immune response as compared to existing skin-penetrating peptides and exhibits remarkably improved skin permeability. Therefore, the biologically active substance can be effectively delivered through the skin, particularly through the stratum corneum.