Recent advances in the asymmetric synthesis of pharmacology-relevant nitrogen heterocycles via stereoselective aza-Michael reactions

MG Vinogradov, OV Turova, SG Zlotin - Organic & Biomolecular …, 2019 - pubs.rsc.org
The prevalence of nitrogen containing heterocycles in natural products and pharmaceuticals
is a doubtless fact. In this review, recent applications of a stereoselective aza-Michael …

Catalytic Asymmetric N‐Alkylation of Indoles and Carbazoles through 1,6‐Conjugate Addition of Aza‐para‐quinone Methides

M Chen, J Sun - Angewandte Chemie International Edition, 2017 - Wiley Online Library
Catalytic asymmetric N‐alkylation of indoles and carbazoles represents a family of important
but underdeveloped reactions. Herein, we describe a new organocatalytic strategy in which …

Enantioselective Catalytic Synthesis of N-alkylated Indoles

D Trubitsõn, T Kanger - Symmetry, 2020 - mdpi.com
During the past two decades, the interest in new methodologies for the synthesis of chiral N-
functionalized indoles has grown rapidly. The review illustrates efficient applications of …

Direct asymmetric N-propargylation of indoles and carbazoles catalyzed by lithium SPINOL phosphate

Y Wang, S Wang, W Shan, Z Shao - Nature Communications, 2020 - nature.com
Catalytic asymmetric functionalization of the N–H groups of indoles and carbazoles
constitutes an important but less developed class of reactions. Herein, we describe a …

Ruthenium-catalyzed asymmetric allylic alkylation of isatins

BM Trost, CA Kalnmals, D Ramakrishnan… - Organic …, 2020 - ACS Publications
A new ruthenium-based catalytic system for branched-selective asymmetric allylic alkylation
is disclosed and applied to the synthesis of chiral isatin derivatives. The catalyst, which is …

Asymmetric N-Hydroxyalkylation of Indoles with Ethyl Glyoxalates Catalyzed by a Chiral Phosphoric Acid: Highly Enantioselective Synthesis of Chiral N,O-Aminal …

L Wang, J Zhou, TM Ding, ZQ Yan, SH Hou… - Organic …, 2019 - ACS Publications
A method of SPINOL-derived chiral phosphoric acid catalyzed asymmetric intermolecular N-
hydroxyalkylation of multisubstituted indoles with ethyl glyoxalates is described in this report …

Chiral Phosphoric Acid‐Catalyzed Chemo‐and Enantioselective N‐Alkylation of Indoles with Imines

S Yang, L Li, J Zhao - Advanced Synthesis & Catalysis, 2022 - Wiley Online Library
A chemo‐and enantioselective protocol for the N‐alkylation of indoles with imines was
developed. This process was catalyzed by a BINOL‐derived phosphoric acid catalyst to give …

Friedel–Crafts Reaction of Indoles with Isatin‐Derived β, γ‐Unsaturated α‐Keto Esters Using a BINOL‐Derived Bisoxazoline (BOX)/Copper (II) Complex as Catalyst

NK Li, LP Kong, ZH Qi, SJ Yin, JQ Zhang… - Advanced Synthesis …, 2016 - Wiley Online Library
Several chiral BINOL‐derived bisoxazoline (BOX)/copper (II) complexes were synthesized
and evaluated as catalysts for the Friedel–Crafts reaction of indoles with isatin‐derived β, γ …

Enantioselective conjugate addition of hydroxylamines to α, β-unsaturated 2-acyl imidazoles catalyzed by a chiral-at-metal Rh (III) complex

T Deng, GK Thota, Y Li, Q Kang - Organic Chemistry Frontiers, 2017 - pubs.rsc.org
A catalytic enantioselective hydroxyamination of α, β-unsaturated 2-acyl imidazoles with N-
protected hydroxyl amines catalyzed by a chiral-at-metal Rh (III) complex (0.5–2 mol%) has …

Chemical Constituents of Phaius mishmensis

CW Jao, TH Hung, CF Chang, TH Chuang - Molecules, 2016 - mdpi.com
The partitioned n-hexane, CHCl3, and EtOAc extracts from the crude MeOH extract of
Phaius mishmensis showed considerable cytotoxicities against the human breast carcinoma …