Pyrrolizidine alkaloids: occurrence, biology, and chemical synthesis

J Robertson, K Stevens - Natural Product Reports, 2017 - pubs.rsc.org
Covering: 2013 up to the end of 2015 This review covers the isolation and structure of new
pyrrolizidines; pyrrolizidine biosynthesis; biological activity, including the occurrence of …

Cutting-edge and time-honored strategies for stereoselective construction of C–N bonds in total synthesis

AK Mailyan, JA Eickhoff, AS Minakova, Z Gu… - Chemical …, 2016 - ACS Publications
The main objective of this review is to provide a comprehensive survey of methods used for
stereoselective construction of carbon–nitrogen bonds during the total synthesis of nitrogen …

Electrophilic aminating agents in total synthesis

LG O'Neil, JF Bower - Angewandte Chemie, 2021 - Wiley Online Library
Classical amination methods involve the reaction of a nitrogen nucleophile with an
electrophilic carbon center; however, in recent years, umpoled strategies have gained …

Pyrrolizidine alkaloids

J Tamariz, E Burgueño-Tapia, MA Vázquez… - The alkaloids: chemistry …, 2018 - Elsevier
Naturally occurring pyrrolizidine alkaloids (PAs) are isolated from plants and other sources.
The interest of the scientific community in these compounds owes itself to their high toxicity …

Redox-neutral α-C–H functionalization of pyrrolidin-3-ol

CB Yi, ZY She, YF Cheng, J Qu - Organic letters, 2018 - ACS Publications
A redox-neutral α-C–H oxygenation of commercially available pyrrolidin-3-ol with a
monoprotected p-quinone generated an N-aryliminium ion intermediate, which reacted in …

P 4 O 10/TfOH mediated domino condensation–cyclization of amines with diacids: a route to indolizidine alkaloids under catalyst-and solvent-free conditions

KS Mandrekar, SG Tilve - RSC advances, 2022 - pubs.rsc.org
A domino condensation–cyclization method is developed to synthesize indolizidine
alkaloids using a P4O10/TfOH reagent system without the employment of either a catalyst or …

Heterogeneous Dipeptide‐Catalyzed α‐Amination of Aldehydes in a Continuous‐Flow Reactor: Effect of Residence Time on Enantioselectivity

SB Ötvös, A Szloszár, IM Mándity… - Advanced Synthesis & …, 2015 - Wiley Online Library
A solid‐supported dipeptide‐catalyzed continuous‐flow process was developed for the
direct enantioselective α‐amination of aldehydes with dibenzyl azodicarboxylate as the …

Enantioselective syntheses of (R)-pipecolic acid,(2 R, 3 R)-3-hydroxypipecolic acid, β-(+)-conhydrine and (−)-swainsonine using an aziridine derived common chiral …

SP Chavan, LB Khairnar, KP Pawar, PN Chavan… - RSC Advances, 2015 - pubs.rsc.org
Concise total syntheses of (R)-pipecolic acid,(R)-ethyl-6-oxopipecolate,(2R, 3R)-3-
hydroxypipecolic acid and formal syntheses of β-(+)-conhydrine,(−)-lentiginosine,(−) …

[HTML][HTML] Glycine-Based [3+ 2] Cycloaddition for the Synthesis of Pyrrolidine-Containing Polycyclic Compounds

T Zhou, X Zhang, D Zhan, W Zhang - Molecules, 2024 - mdpi.com
The synthesis of pyrrolidine compounds with biological interest is an active research topic.
Glycine could be a versatile starting material for making pyrrolidine derivatives. This review …

Synthetic Strategies towards the Azabicyclo [3.3. 0]-Octane Core of Natural Pyrrolizidine Alkaloids. An Overview

ST Martinez, C Belouezzane, AC Pinto… - Organic Preparations …, 2016 - Taylor & Francis
Pyrrolizidine or azabicyclo [3.3. 0]-octane (Figure 1) and its derivatives are a very common
azabicycle motif within natural products (pyrrolizidine alkaloids, PAs) possessing a bridge …