2-Hydroxyimino-2-phenylacetonitrile active esters in peptide synthesis
作者:Wiktor Koziołkiewicz、Anna Janecka
DOI:10.1016/s0040-4039(00)99378-x
日期:1989.1
A number of 2-hydroxyimino-2-phenylacetonitrile esters of acylamino acids have been synthesized. These compounds react readily with amino acid or peptideesters to elongate the peptide chain.
The present invention provides compounds which inhibit proteases, including cathepsin K, pharmaceutical compositions of such compounds, and methods for treating diseases of excessive bone loss or cartilage or matrix degradation, including osteoporosis; gingival disease including gingivitis and periodontitis; arthritis, more specifically, osteoarthritis and rheumatoid arthritis; Paget's disease; hypercalcemia of malignancy; and metabolic bone disease, comprising inhibiting said bone loss or excessive cartilage or matrix degradation by administering to a patient in need thereof a compound of the present invention.
The present invention provides compounds which inhibit proteases, including cathepsin K, pharmaceutical compositions of such compounds, and methods for treating diseases of excessive bone loss or cartilage or matrix degradation, including osteoporosis; gingival disease including gingivitis and periodontitis; arthritis, more specifically, osteoarthritis and rheumatoid arthritis; Paget's disease; hypercalcemia of malignancy; and metabolic bone disease, comprising inhibiting said bone loss or excessive cartilage or matrix degradation by administering to a patient in need thereof a compound of the present invention.
The present invention provides compounds which inhibit proteases, including cathepsin K, pharmaceutical compositions of such compounds, and methods for treating diseases of excessive bone loss or cartilage or matrix degradation, inducing osteoporosis; gingival disease including gingivitis and periodontists; arthritis, more specifically, osteoarthritis and rheumatoid arthritis; Paget's disease; hypercalcemia of malignancy; and metabolic bone disease, comprising inhibiting said bone loss or excessive cartilage or matrix degradation by administering to a patient in need thereof a compound of the present invention.
Total Synthesis and Structural Determination of Cyclodepsipeptide Decatransin
作者:Kosuke Ohsawa、Sakiko Fukaya、Takayuki Doi
DOI:10.1021/acs.orglett.2c02085
日期:2022.8.5
determination of the 30-membered cyclodepsipeptide decatransin was demonstrated on the basis of totalsynthesis. Both (R)- and (S)-2-hydroxy-5-methylhexanoic acid derivatives were prepared via the Evans asymmetric alkylation. N-Alkyl-enriched peptide fragments were synthesized by the Cbz strategy in the solution phase without formation of diketopiperazine and epimerization. The synthesis of putative candidates
在全合成的基础上,证明了 30 元环肽十肽的结构测定。( R )-和( S )-2-羟基-5-甲基己酸衍生物均通过Evans不对称烷基化制备。在溶液相中通过 Cbz 策略合成了富含N-烷基的肽片段,没有形成二酮哌嗪和差向异构化。推定候选物的合成是通过三个肽片段的会聚肽偶联,然后在光信条件下进行大环化来实现的。