Stereodivergent Synthesis of Enantioenriched 4-Hydroxy-2-cyclopentenones
摘要:
Protected 4-hydroxycyclopentenones (4-HCPs) constitute an important class of intermediates in chemical synthesis. A route to this class of compound has been developed. Key steps include Noyori reduction (which establishes the stereochemistry of the product), ring-closing metathesis, and simple functional group conversions to provide a set of substituted 4-HCPs in either enantiomeric form.
Genetically Encoded Fragment-Based Discovery from Phage-Displayed Macrocyclic Libraries with Genetically Encoded Unnatural Pharmacophores
作者:Arunika I. Ekanayake、Lena Sobze、Payam Kelich、Jihea Youk、Nicholas J. Bennett、Raja Mukherjee、Atul Bhardwaj、Frank Wuest、Lela Vukovic、Ratmir Derda
DOI:10.1021/jacs.1c01186
日期:2021.4.14
genetically encodedlibraries of peptides. A diketone linchpin 1,5-dichloropentane-2,4-dione converts peptide libraries displayed on phage to 1,3-diketone bearing macrocyclic peptides (DKMP): shelf-stable precursors for Knorr pyrazole synthesis. Ligation of diverse hydrazine derivatives onto DKMP libraries displayed on phage that carries silent DNA-barcodes yields macrocyclic libraries in which the
具有非天然药效团的基因编码大环肽文库是发现许多感兴趣靶点的配体的宝贵来源。传统上,此类文库的生成采用“早期”将非天然结构单元掺入化学或翻译产生的大环化合物中。在这里,我们描述了从现成的起始材料开始的此类文库的不同后期方法:基因编码的肽文库。二酮关键 1,5-二氯戊烷-2,4-二酮可将噬菌体上展示的肽库转化为带有 1,3-二酮的大环肽 (DKMP):用于克诺尔吡唑合成的耐贮存前体。将多种肼衍生物连接到携带沉默DNA条形码的噬菌体上展示的DKMP文库上,产生大环文库,其中氨基酸序列和药效团由DNA编码。该文库针对碳酸酐酶富集的具有苯磺酰胺药效基团和纳摩尔K d 的大环化合物进行选择。本手稿中描述的方法可以将不同的药效团移植到许多现有的基因编码噬菌体库中,并显着增加此类库在分子发现中的价值。
[EN] GENETICALLY-ENCODED MACROCYCLIC PEPTIDE LIBRARIES BEARING A PHARMACOPHORE<br/>[FR] BANQUES PEPTIDIQUES MACROCYCLIQUES GÉNÉTIQUEMENT CODÉS PORTANT UN PHARMACOPHORE
申请人:UNIV ALBERTA
公开号:WO2020107118A1
公开(公告)日:2020-06-04
The present invention relates to a method of forming a macrocyclic peptide bearing a pharmacophore and said produced macrocyclic peptide, wherein the method comprises the steps of: reacting a peptide with two thiol groups of cysteine side chains with the reactive compound 1,5 -dichloropentanedion-2,4. The reaction between the reactive compound and the peptide produces an 1,3 -diketone-containing macrocyclic polypeptide. The macrocycle with a 1,3 -diketone group is then modified by reaction of said macrocycle with an alkyl or aryl hydrazine group bearing a pharmacophore in benign aqueous conditions. The macrocycles may be displayed in a library, such as a phage display library, and used to biopan for affinity against a selected target.
Stereocontrolled Synthesis of a C<sup>1</sup>-C<sup>10</sup>Building Block (“Southwestern Moiety”) for the Unnatural Enantiomers of the Polyene Polyol Antibiotics Filipin III and Pentamycin: A Sultone-Forming Ring-Closing Metathesis for Protection of Homoallylic Alcohols
作者:Patrick Walleser、Reinhard Brückner
DOI:10.1002/ejoc.201400145
日期:2014.5
The twofold ring‐closing metathesis of homoallyl crotonate and homoallyl ethenesulfonate intermediate A gave unsaturated lactone and sultone containing intermediate B. The lactone was modified by diastereoselective 1,4‐addition of a silyl cuprate and the sultone was removed to deliver a homoallylicalcohol that iodocarbonatized cis‐selectively (→ C). A diastereoselective aldolization followed (→ → D)
The invention concerns a water soluble compound of formula (a) wherein: A represents naphthyl or phenyl; and Ar
1
and Ar
2
independently represent a saturated or aromatic carbocyclic group; X
a
, X
b
are independently selected among an amino group, an ammonium group and an amino group modified by a linear polyoxyalkylene chain, provided that at least one of X
a
and X
b
represents ammonium or modified amino.
Compounds of formula VII are described:
1
wherein A represents phenyl or naphthyl and
Ar
1
and Ar
2
independently represent a saturated or aromatic carbocyclic group. The compounds may be prepared by reducing the nitrile functions of a compound of formula I:
2
描述了式 VII 的化合物:
1
其中 A 代表苯基或萘基,且
Ar
1
和 Ar
2
分别代表饱和或芳香碳环基团。这些化合物可通过还原式 I 化合物的腈基官能团来制备:
2