Gowda, D. Channe; Baba, A. Ramesha; Luan, Chi-Hao, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2002, vol. 41, # 12, p. 2606 - 2613
Gowda, D. Channe; Baba, A. Ramesha; Luan, Chi-Hao, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2002, vol. 41, # 12, p. 2606 - 2613
Waste-free catalytic assembly of α-amino acids is fueled by a multiboron catalyst that features a characteristic B3NO2 heterocycle, providing a versatile catalytic protocol wherein functionalized natural α-amino acid units are accommodated and commonly used protecting groups are tolerated. The facile dehydrative conditions eliminate the use of engineered peptide coupling reagents, exemplifying a greener
α-氨基酸的无废催化组件由具有特征性B 3 NO 2杂环的多硼催化剂提供燃料,从而提供了一种通用的催化方案,其中可以容纳官能化的天然α-氨基酸单元,并且可以耐受常用的保护基团。简便的脱水条件消除了工程化肽偶联剂的使用,为肽偶联提供了更绿色的催化选择。催化作用足够坚固,可以合成五肽,以催化方式构建所有四个酰胺键。
POLYETHYLENE GLYCOL CONJUGATED DRUG AND ITS PREPARATION METHOD AND USE
申请人:CHONGQING UPGRA BIOTECHNOLOGY CO., LTD.
公开号:US20220105189A1
公开(公告)日:2022-04-07
The disclosure relates to the technical field of medicine and in particular to a polyethylene glycol conjugated drug of formula I or a pharmaceutically acceptable salt thereof. The disclosure further relates to a method for preparation and an intermediate of the polyethylene glycol conjugated drug or a pharmaceutically acceptable salt thereof, a pharmaceutical composition comprising the polyethylene glycol conjugated drug or a pharmaceutically acceptable salt thereof, and use of the polyethylene glycol conjugated drug or a pharmaceutically acceptable salt thereof in preparation of a medicament.