Synthesis of IB-01211, a Cyclic Peptide Containing 2,4-Concatenated Thia- and Oxazoles, via Hantzsch Macrocyclization
摘要:
An efficient and versatile convergent synthesis of IB-01211 based on a combination of peptide and heterocyclic chemistry is described. The key step in the synthesis is macrocyclization through intramolecular Hantzsch formation of the thiazole ring. Dehydration of a free primary alcohol to furnish the exocyclic methylidene present in the natural product was applied during the macrocyclization.
Synthesis of sansalvamide A peptidomimetics: triazole, oxazole, thiazole, and pseudoproline containing compounds
作者:Melinda R. Davis、Erinprit K. Singh、Hendra Wahyudi、Leslie D. Alexander、Joseph B. Kunicki、Lidia A. Nazarova、Kelly A. Fairweather、Andrew M. Giltrap、Katrina A. Jolliffe、Shelli R. McAlpine
DOI:10.1016/j.tet.2011.11.089
日期:2012.1
heterocycles (triazoles, oxazoles, thiazoles, or pseudoprolines) along the macrocyclic backbone. The syntheses of these derivatives employ several approaches that can be applied to convert a macrocyclic peptide into its peptidomimetic counterpart. These approaches include peptide modifications to generate the alkyne and azide for click chemistry, a serine conversion into an oxazole, a Hantzsch reaction
与用肽类似物观察到的相比,基于肽模拟物的大环化合物通常具有改进的药代动力学特性。描述了基于活性 sansalvamide A 结构的 13 种拟肽衍生物的合成,其中这些类似物沿大环骨架包含杂环(三唑、恶唑、噻唑或假脯氨酸)。这些衍生物的合成采用了几种可用于将大环肽转化为其拟肽对应物的方法。这些方法包括肽修饰以生成用于点击化学的炔烃和叠氮化物、丝氨酸转化为恶唑、Hantzsch 反应生成噻唑以及保护苏氨酸生成假脯氨酸衍生物。此外,我们展示了两种不同的拟肽部分,三唑和噻唑,
Bifunctional Brønsted Base Catalyzes Direct Asymmetric Aldol Reaction of α-Keto Amides
作者:Haizea Echave、Rosa López、Claudio Palomo
DOI:10.1002/anie.201510482
日期:2016.3.1
cross‐aldol reaction of α‐keto amides with aldehydes, mediated by a bifunctional ureidopeptide‐based Brønsted base catalyst, is described. The appropriate combination of a tertiary amine base and an aminal, and urea hydrogen‐bond donor groups in the catalyst structure promoted the exclusive generation of the α‐keto amide enolate which reacted with either non‐enolizable or enolizable aldehydes to produce
[EN] MACROCYCLIC 2-AMINO-3-FLUORO-BUT-3-ENAMIDES AS INHIBITORS OF MCL-1<br/>[FR] 2-AMINO-3-FLUORO-BUT-3-ÉNAMIDES MACROCYCLIQUES UTILISÉS COMME INHIBITEURS DE MCL-1
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2021250102A1
公开(公告)日:2021-12-16
The present invention relates to pharmaceutical agents useful for therapy and/or prophylaxis in a subject, pharmaceutical composition comprising such compounds (formula (I)), and their use as MCL-1 inhibitors, useful for treating diseases such as cancer.
Total Synthesis of <i>trans</i>,<i>trans-</i>Sanguinamide B and Conformational Isomers
作者:Erinprit K. Singh、Deborah M. Ramsey、Shelli R. McAlpine
DOI:10.1021/ol203290n
日期:2012.3.2
The first total synthesis of Sanguinamide B is reported, prepared via an efficient synthetic strategy. The natural product, trans,trans-Sanguinamide B (1), was generated in a thermodynamic ratio with trans,cis-Sanguinamide B (2) and cis,cis-Sanguinamide B (3). Complete conversion of the cis,cis-Sanguinamide B conformer (3) to the natural product (1) and the trans,cis- conformer (2) was achieved by
Progress toward the synthesis of Urukthapelstatin A and two analogues
作者:Chung-Mao Pan、Chun-Chieh Lin、Seong Jong Kim、Robert P. Sellers、Shelli R. McAlpine
DOI:10.1016/j.tetlet.2012.05.105
日期:2012.8
our progress toward the synthesis of Urukthapelstatin A (Ustat A) and twoanalogues. Our retrosynthetic strategy involved the synthesis of three fragments: a tri-heteroaromatic moiety, a phenyl oxazole fragment, and a dipeptide. Described are the syntheses of three unique tri-heteroaromatic moieties. In addition, the corresponding linear precursors of Ustat A and twoanalogues are presented.
我们报告了合成 Urukthapelstatin A (Ustat A) 和两种类似物的进展。我们的逆合成策略涉及三个片段的合成:三杂芳族部分、苯基恶唑片段和二肽。描述了三个独特的三杂芳族部分的合成。此外,还提供了 Ustat A 和两种类似物的相应线性前体。