轴承替代残基1的一系列的万古霉素糖苷配基类似物的合成和生物学评价Ñ甲基d α-氨基酸中有描述。制备类似物以确定 H 键合d -氨基酸是否可以提高对模型配体N , N '-Ac 2 - l -Lys- d -Ala- d -Ala ( 2 ) 和N , N '-的亲和力Ac 2 - l -Lys- d -Ala- d -Lac ( 3) 并提高对万古霉素敏感或耐万古霉素细菌的抗菌活性。此外,一系列具有上的残留物1所附的亲核试剂(肼和胺)类似物的d α-氨基酸中描述检查它们与的C-末端酯反应的能力的是3,形成一个共价连接升-Lys- d -Ala 到天然产物类似物。
Novel quinazolinamide derivatives of the formula (I), in which R1-R43 and X have the meanings indicated in claim
1
, are HSP90 inhibitors and can be used for the preparation of a medicament for the treatment of diseases in which the inhibition, regulation and/or modulation of HSP90 plays a role.
Benzo-fused lactams that promote the release of growth hormone
申请人:Merck & Co., Inc.
公开号:US05206235A1
公开(公告)日:1993-04-27
There are disclosed certain novel compounds identified as benzo-fused lactams which promote the release of growth hormone in humans and animals. This property can be utilized to promote the growth of food animals to render the production of edible meat products more efficient, and in humans, to increase the stature of those afflicted with a lack of a normal secretion of natural growth hormone. Growth promoting compositions containing such benzo-fused lactams as the active ingredient thereof are also disclosed.
Rapid sodium periodate cleavage of an unnatural amino acid enables unmasking of a highly reactive α-oxo aldehyde for protein bioconjugation
作者:Robin L. Brabham、Tessa Keenan、Annika Husken、Jacob Bilsborrow、Ryan McBerney、Vajinder Kumar、W. Bruce Turnbull、Martin A. Fascione
DOI:10.1039/d0ob00972e
日期:——
The α-oxo aldehyde is a highly reactive aldehyde for which many protein bioconjugation strategies exist. Here, we explore the genetic incorporation of a threonine-lysine dipeptide into proteins, harbouring a “masked” α-oxo aldehyde that is rapidly unveiled in four minutes. The reactive aldehyde could undergo site-specific protein modification by SPANC ligation.
The present invention relates to antibody-drug conjugates comprising (i) an antibody or antigen-binding fragment thereof, (ii) a polymer comprising a particular repeat unit comprising an amino acid derivative, which is covalently bound to one or more biologically active moieties, such as small molecule drugs, optionally via a linker, and (iii) a polymer-antibody linker moiety which is covalently bound to both the polymer and the antibody or antigen-binding fragment thereof. Additionally, the present invention relates to pharmaceutical compositions comprising the antibody-drug conjugates and to use of the antibody-drug conjugates in medicine.
Design and synthesis of vidarabine prodrugs as antiviral agents
作者:Wei Shen、Jae-Seung Kim、Phillip E. Kish、Jie Zhang、Stefanie Mitchell、Brian G. Gentry、Julie M. Breitenbach、John C. Drach、John Hilfinger
DOI:10.1016/j.bmcl.2008.12.031
日期:2009.2
5′-O-d- and l-aminoacidderivatives and 5′-O-(d- and l-aminoacid methyl ester phosphoramidate) derivatives of vidarabine (ara-A) were synthesized as vidarabine prodrugs. Some compounds were equi- or more potent in vitro than vidarabine against two pox viruses and their uptake by cultured cells was improved compared to the parent drug.
合成了阿糖腺苷 (ara-A) 的5'- O - d - 和l - 氨基酸衍生物以及 5'- O -(d - 和l - 氨基酸甲酯氨基磷酸酯)衍生物作为阿糖腺苷前药。一些化合物在体外对抗两种痘病毒的效力与阿糖腺苷相当或更强,并且与母体药物相比,它们被培养细胞的吸收得到改善。