<i>O</i>-Allylated Pudovik and Passerini Adducts as Versatile Scaffolds for Product Diversification
作者:Mansour Dolé Kerim、Tania Katsina、Martin Cattoen、Nicolas Fincias、Stellios Arseniyadis、Laurent El Kaïm
DOI:10.1021/acs.joc.0c01721
日期:2020.10.2
The palladium-catalyzed O-allylation of α-hydroxyphosphonates and α-hydroxyamides obtained from Pudovik and Passerini multicomponent reactions has allowed interesting and highly straightforward access to a variety of building blocks for product diversification. These post-functionalizations include a selective base- or ruthenium hydride-mediated isomerization/Claisen rearrangement cascade and a ring-closing
Palladium-catalysed<i>O</i>-Allylation of α-Hydroxyphosphonates: An Expedient Entry into Phosphono-oxaheterocycles
作者:Mansour Dolé Kerim、Martin Cattoen、Nicolas Fincias、Aurélie Dos Santos、Stellios Arseniyadis、Laurent El Kaïm
DOI:10.1002/adsc.201701150
日期:2018.2.1
We report here an unprecedented palladium-catalysed O-allylation of α-hydroxyphosphonates. The method was eventually included in a sequential Pudovik/Tsuji-Trost type O-allylation/Ring-Closing Metathesis to afford a variety of phosphorylated heterocycles of various sizes ranging from 5 to 16 starting from readily available aldehydes.
Mechanistic approach for expeditious and solvent-free synthesis of α-hydroxy phosphonates using potassium phosphate as catalyst
作者:Makarand A. Kulkarni、Uday P. Lad、Uday V. Desai、Satish D. Mitragotri、Prakash P. Wadgaonkar
DOI:10.1016/j.crci.2012.10.009
日期:2013.2
Résumé An extremely simple, high yielding, highly rapid and solvent-free protocol has been described for hydrophosphylation of aldehydes using potassium phosphate as catalyst. Easy commercial availability of the reusable catalyst, operational simplicity at ambient temperature and avoidance of conventional work-up as well as purification procedure makes this solvent-free protocol a near-ideal synthesis. Supplementary Materials: Supplementary material for this article is supplied as a separate file: mmc1.pdf
, with the exception of 1a, behaved as competitive inhibitors for the three subclasses. Apart from 13 and 21, all the mercaptophosphonates tested exhibit a good inhibitory effect on the subclass B2 MBL CphA with low inhibition constants (Ki < 15 μM). Interestingly, compound 18 turned out to be a potent broad spectrum MBL inhibitor. The crystallographic structures of the CphA−10a and CphA−18 complexes
尽管目前已将商业化的活性位点丝氨酸β-内酰胺酶抑制剂与抗生素疗法并用,但尚未发现临床上有用的金属β-内酰胺酶(MBLs)抑制剂。在本文中,我们研究了巯基膦酸酯衍生物对MBL的三个亚类(B1,B2和B3)的抑制作用。除1a外,所有14种经测试的巯基膦酸酯均作为这三个亚类的竞争性抑制剂。除13和21外,所有测试的巯基膦酸酯均对B2 MBL CphA亚类表现出良好的抑制作用,且抑制常数较低(K i < 15μM )。有趣的是,化合物18事实证明它是一种有效的广谱MBL抑制剂。CphA- 10a和CphA- 18配合物的晶体结构表明10a的硫原子和18的膦酸酯基分别与Zn 2+离子相互作用。分子模型研究化合物10a和18与VIM-4(B1),CphA(B2)和FEZ-1(B3)酶之间相互作用的机理,取决于该酶和抑制剂的不同结合方式,与晶体结构。
Remizov, A. S.; Koroleva, T. I.; Promonenkov, V. K., Journal of general chemistry of the USSR, 1981, vol. 51, # 2, p. 275 - 281
作者:Remizov, A. S.、Koroleva, T. I.、Promonenkov, V. K.、Grapov, A. F.