Exploration of the P1 SAR of aldehyde cathepsin K inhibitors
摘要:
The synthesis and biological activity of a series of aldehyde inhibitors of cathepsin K are reported. Exploration of the properties of the S(1) subsite with a series of alpha-amino aldehyde derivatives substituted at the P(1) position afforded compounds with cathepsin K IC(50)s between 52 microM and 15 nM.
通过1,3-偶极环加成反应 迅速进入氨基酸衍生的各种3,4-二氢吡嗪和二氢[1,2,3]三唑并[1,5- a ]吡嗪†
摘要:
通过分子内1,3-高效,通用和实用地合成各种3,4-二氢吡嗪,6,7-二氢-[1,2,3]三唑并吡嗪和7,8-二氢-[1,2,3]三唑并二氮杂pine描述了从氨基酸衍生的常见中间体以高收率进行偶极环加成。此外,在此方法中,还可以通过一锅获得光学活性的3-芳基取代的6,7-二氢-[1,2,3]三唑并[1,5- a ]吡嗪在钯-铜共催化体系中的应用。工作。容易获得的基材和操作简便性使该工艺适合于进一步探索。
Substituted 2-arylimino heterocycles and compositions containing them, for use as progesterone receptor binding agents
申请人:Bayer Corporation
公开号:US06353006B1
公开(公告)日:2002-03-05
This invention relates to 2-arylimino heterocycles, including 2-arylimino-1,3-thiazolidines, 2-arylimino-2,3,4,5-tetrahydro-1,3-thiazines, 2-arylimino-1,3-thiazolidin-4-ones, 2-arylimino-1,3-thiazolidin-5-ones, and 2-arylimino-1,3-oxazolidines, and their use in modulating progesterone receptor mediated processes, and pharmaceutical compositions for use in such therapies.
A range of 3,3-disubstituted oxindoles accessed using para-quinone methides derived from isatins with thiols were used for the formation of unsymmetrical disulfides, and 3,3-disubstituted oxindoles with a chiral quaternary carbon center and unsymmetric disulfides could also be directly obtained with high selectivities catalyzed by chiral phosphines in one step.
A New Method for the Synthesis of Chiral β-Branched α-Amino Acids
作者:Thomas Spangenberg、Angèle Schoenfelder、Bernhard Breit、André Mann
DOI:10.1021/ol071305m
日期:2007.9.1
A new method for the synthesis of chiral beta-branched alpha-amino acids based on a copper-mediateddirectedallylicsubstitution reaction with Grignard reagents is reported. This is the first case in which a delta-stereogenic center is controlling the diastereoselectivity of an o-DPPB-directed allylicsubstitution. Depending on the alkene geometry of the starting material either diastereomer, anti
Synthesis of selenium-linked neoglycoconjugates and pseudodisaccharides
作者:Ricardo F. Affeldt、Hugo C. Braga、Lucas L. Baldassari、Diogo S. Lüdtke
DOI:10.1016/j.tet.2012.08.075
日期:2012.12
The introduction of organoselenium moieties within the structure of carbohydrates has received attention recently. Herein, we report on the synthesis of selenium-containing neoglycoconjugates and pseudodisaccharides by the reaction of nucleophilic selenium species, generated from sugar diselenides, with chiral N-Boc aziridines and sugar tosylates. The reaction proceeds with moderate to good yields
Synthesis and properties of the eight isostatine stereoisomers
作者:Kenneth L. Rinehart、Ryuichi Sakai、Vimal Kishore、David W. Sullins、Kai Ming Li
DOI:10.1021/jo00037a012
日期:1992.5
The eight possible stereoisomers of isostatine, (3S,4R,5S)-4-amino-3-hydroxy-5-methylheptanoic acid, have been synthesized from the four isomeric D- and L-isoleucinals and D- and L-allo-isoleucinals and ethyl lithioacetate. The eight isomers have been compared for the GC retention times of their bis(trifluoroacetyl) methyl ester derivatives and the H-1 NMR properties of the gamma-lactams derived from them. The natural isomer was shown to be the 3S,4R,5S isomer.