Shikimate and other intermediates of the shikimate-chorismate pathway are densely functionalized structures that seem to offer Limited options for skeletal modification. We designed and synthesized cyclopentylidenes 1 and 2, as well as cyclopentenes 3 and 4, as novel ring-contracted analogues of shikimic acid. Enzymatic studies showed that analogues 1-3 are indeed processed by shikimate kinase to give phosphates I-P, 2-P, and 3-P as five-membered ring analogues of shikimate-3-phosphate. In particular, analogue 1 is converted by the enzyme at a rate only 3.5-fold slower than that of the native substrate, while analogue 3 binds to shikimate kinase with an apparent K-m of 1.7 mM, compared to 0.14 mM for shikimate.
作者:Yang Liu、Zhongyi Mao、Alexandre Pradal、Pei-Qiang Huang、Julie Oble、Giovanni Poli
DOI:10.1021/acs.orglett.8b01616
日期:2018.7.6
The synthesis of bi- and tricyclic structures incorporating pyrrolidone rings is disclosed, starting from resonance-stabilized acetamides and cyclic α,β-unsaturated-γ-oxycarbonyl derivatives. This process involves an intermolecular Tsuji–Trost allylation/intramolecular nitrogen 1,4-addition sequence. Crucial for the success of this bis-nucleophile/bis-electrophile [3 + 2] annulation is its well-defined
[EN] SUBSTITUTED ADENINES AND THE USE THEREOF<br/>[FR] ADENINES SUBSTITUEES ET LEUR UTILISATION
申请人:ASTRAZENECA AB
公开号:WO2006040558A1
公开(公告)日:2006-04-20
This invention relates to compounds of Formula (I): and their use in the treatment of bacterial infections.
这项发明涉及式(I)的化合物及其在治疗细菌感染中的应用。
Switchable selectivity in Pd-catalyzed [3 + 2] annulations of γ-oxy-2-cycloalkenones with 3-oxoglutarates: C–C/C–C vs C–C/O–C bond formation
作者:Yang Liu、Julie Oble、Giovanni Poli
DOI:10.3762/bjoc.15.107
日期:——
complementary [3 + 2] annulation protocols between 3-oxoglutarates and cyclic γ-oxy-2-cycloalkenones, simply differing on the reaction temperature, are disclosed. These domino transformations allow C-C/O-C or C-C/C-C [3 + 2] annulations at will, via an intermolecular Pd-catalyzed C-allylation/intramolecular O- or C-1,4-addition sequence, respectively. In particular, exploiting the reversibility of the O-1
公开了在3-氧戊二酸酯和环状γ-氧基-2-环烯酮之间的两个互补的[3 + 2]环合方案,只是反应温度不同。这些多米诺骨转化可以分别通过分子间Pd催化的C-烯丙基化/分子内O-或C-1,4-加成序列随意进行CC / OC或CC / CC [3 + 2]脱环。特别是,利用O-1,4-加成步骤的可逆性,结合不可逆的C-1,4-加成/脱羧途径,分子内共轭物加成步骤可以从动力学(O-烷基化)转移到由于简单的温度升高,热力学路径(C-烷基化)成为可能。这种双亲核试剂/双亲电子试剂[3 + 2]的成功成功的关键是其明确定义的步骤时间顺序以及前一步的总化学选择性。这种[3 + 2] CC / OC键形成环的协议也可以扩展到1,3,5-三酮以及1,3-双磺酰基丙烷-2-酮双亲核试剂。
SUBSTITUTED ADENINES AND THE USES THEREOF
申请人:Cavero-Tomas Marta
公开号:US20090048203A1
公开(公告)日:2009-02-19
This invention relates to compounds of Formula (I): and their use in the treatment of bacterial infections.
本发明涉及式(I)的化合物及其在治疗细菌感染方面的应用。
Asymmetric inverse-electron-demand 1,3-dipolar cycloadditions of cyclopentadienones and thiophene-1,1-dioxide with <i>C</i>,<i>N</i>-cyclic azomethine imines
The normal 1,3-dipolarcycloaddition between the carbonates of 4-hydroxy-2-cyclopentenones and C,N-cyclicazomethineimines can be switched to an inverse-electron-demand version under Pd(0) catalysis, by in situ generation of HOMO-raised η2-Pd(0)-cyclopentadienone complexes. An array of fused heterocyclic architectures are constructed with high levels of diastereo and enantioselectivity, and diastereodivergent