Synthesis and DNA cleavage evaluation of epoxypiperidine derivatives bearing a dehydroamino acid unit
摘要:
Epoxypiperidine derivatives bearing a dehydroamino acid unit were designed and synthesized as novel DNA alkylating agents based on the structure of azinomycins. A relaxation assay of plasmid DNA revealed that the epoxypiperidine derivative 3 has a DNA cleavage activity. Based on the studies, it would appear that the electron density of the amino group of epoxypiperidines plays a critically important role in the DNA cleavage. (C) 2010 Elsevier Ltd. All rights reserved.
Epoxypiperidine derivatives bearing a dehydroamino acid unit were designed and synthesized as novel DNA alkylating agents based on the structure of azinomycins. A relaxation assay of plasmid DNA revealed that the epoxypiperidine derivative 3 has a DNA cleavage activity. Based on the studies, it would appear that the electron density of the amino group of epoxypiperidines plays a critically important role in the DNA cleavage. (C) 2010 Elsevier Ltd. All rights reserved.
Enantioselective Synthesis of Axially Chiral Diaryl Ethers through Chiral Phosphoric Acid-Catalyzed Desymmetric Acylation with Azlactones
作者:Jiawei Xu、Wei Lin、Hanliang Zheng、Xin Li
DOI:10.1021/acscatal.4c01489
日期:——
C–O axially chiral diaryl ethers play important roles in natural products and bioactive molecules, but because of the low rotational barrier and strict steric hindrance requirements, the catalytic asymmetric construction of axially chiral diaryl ethers still remains a challenge. Herein, we devised a strategy employing achiral azlactone for the desymmetrization of prochiral diamines under the catalysis