165807-05-6Relevant articles and documents
Alkenyl Isocyanide Conjugate Additions: A Rapid Route to γ-Carbolines
Chepyshev, Sergiy V.,Lujan-Montelongo, J. Armando,Chao, Allen,Fleming, Fraser F.
, p. 4310 - 4313 (2017)
Isocyanides are exceptional building blocks, the wide deployment of which in multicomponent and metal-insertion reactions belies their limited availability. The first conjugate addition/alkylation to alkenyl isocyanides is described, which addresses this deficiency. An array of organolithiums, magnesiates, enolates, and metalated nitriles add conjugately to β- and β,β-disubstituted arylsulfonyl alkenyl isocyanides to rapidly assemble diverse isocyanide scaffolds. The intermediate metalated isocyanides are efficiently trapped with electrophiles to generate substituted isocyanides incorporating contiguous tri- and tetra-substituted centers. The substituted isocyanides are ideally functionalized for elaboration into synthetic targets as illustrated by the three-step synthesis of γ-carboline N-methyl ingenine B.
A Conformational Restriction Strategy for the Identification of a Highly Selective Pyrimido-pyrrolo-oxazine mTOR Inhibitor
Borsari, Chiara,Rageot, Denise,Dall'Asen, Alix,Bohnacker, Thomas,Melone, Anna,Sele, Alexander M.,Jackson, Eileen,Langlois, Jean-Baptiste,Beaufils, Florent,Hebeisen, Paul,Fabbro, Doriano,Hillmann, Petra,Wymann, Matthias P.
, p. 8609 - 8630 (2019/10/16)
The mechanistic target of rapamycin (mTOR) plays a pivotal role in growth and tumor progression and is an attractive target for cancer treatment. ATP-competitive mTOR kinase inhibitors (TORKi) have the potential to overcome limitations of rapamycin derivatives in a wide range of malignancies. Herein, we exploit a conformational restriction approach to explore a novel chemical space for the generation of TORKi. Structure-activity relationship (SAR) studies led to the identification of compound 12b with a ～450-fold selectivity for mTOR over class I PI3K isoforms. Pharmacokinetic studies in male Sprague Dawley rats highlighted a good exposure after oral dosing and a minimum brain penetration. CYP450 reactive phenotyping pointed out the high metabolic stability of 12b. These results identify the tricyclic pyrimido-pyrrolo-oxazine moiety as a novel scaffold for the development of highly selective mTOR inhibitors for cancer treatment.
Two new approaches towards the synthesis of annomontine using Pictet-Spengler and aza-Diels-Alder reactions
Naik, Nilesh H.,Sikder, Arun K.,Kusurkar, Radhika S.
supporting information, p. 3715 - 3717 (2013/07/05)
Two new routes were established for the synthesis of biologically active natural product annomontine utilizing Pictet-Spengler and aza-Diels-Alder reactions as key steps.
