A Review of the Synthetic Strategies toward Dihydropyrrolo[1,2-a]Pyrazinones

P Winant, T Horsten, SM Gil de Melo, F Emery… - Organics, 2021 - mdpi.com
Dihydropyrrolo [1, 2-a] pyrazinone rings are a class of heterocycles present in a wide range
of bioactive natural products and analogues thereof. As a direct result of their bioactivity, the …

Alkaloids, sesquiterpenoids and hybrids of terpenoid with p-hydroxycinnamic acid from Ganoderma sinensis and their biological evaluation

Q Luo, WW Cao, YX Cheng - Phytochemistry, 2022 - Elsevier
The fruiting bodies of Ganoderma sinensis are used as food raw materials of marketed
healthcare products. To gain an insight into the chemical and biological profling of G …

2, 5-Diketopiperazine catalysts as activators of dioxygen in oxidative processes

M Petsi, AL Zografos - ACS Catalysis, 2020 - ACS Publications
The ability of natural and non-natural dipeptides to act as activators of dioxygen in the
absence of metallic cocatalysts is reported here. Proline-derived 2, 5-diketopiperazines …

Generation and Aerobic Oxidation of Azavinyl Captodative Radicals

S Aggarwal, WJ Richards, VV Fokin - Journal of the American …, 2023 - ACS Publications
We describe a cascade reaction that selectively incorporates oxygen into the carbon−
carbon backbone of alkynes using air as the source. The process starts by lithiating readily …

Accessing Chiral Pyrrolodiketopiperazines under Organocatalytic Conditions

E Duñabeitia, A Landa, R López, C Palomo - Organic Letters, 2022 - ACS Publications
The production of chiral pyrrolodiketopiperazines under organocatalytic conditions
demonstrates the capacity of bicyclic acylpyrrol lactims to perform as pronucleophiles in …

Chemical Investigation of the Calcareous Marine Sponge Pericharax heteroraphis, Clathridine-A Related Derivatives Isolation, Synthesis and Osteogenic Activity

C Jourdain de Muizon, C Moriou, M Levasseur… - Marine drugs, 2024 - mdpi.com
As a result of screening a panel of marine organisms to identify lead molecules for the
stimulation of endochondral bone formation, the calcareous sponge Pericharax heteroraphis …

Synthesis of Pyrrolopyrazinones by Construction of the Pyrrole Ring onto an Intact Diketopiperazine

SK Maisto, AP Leersnyder, GL Pudner… - The Journal of organic …, 2020 - ACS Publications
This study reveals an alternative sequence for the synthesis of compounds that contain the
pyrrolodiketopiperazine structural motif. Starting with a diketopiperazine precursor, a mild …

Acid/Base‐Co‐catalyzed Direct Oxidative α‐Amination of Cyclic Ketones: Using Molecular Oxygen as the Oxidant

YJ Li, L Zhang, N Yan, XH Meng… - Advanced Synthesis & …, 2018 - Wiley Online Library
A novel acid/base‐co‐catalyzed direct intermolecular α‐amination of various cyclic ketones
has been developed for the first time. The reaction employs molecular oxygen as the sole …

Straightforward Access to Hexahydropyrrolo[2,3‐b]indole Core by a Regioselective C3‐Azo Coupling Reaction of Arenediazonium Compounds with Tryptamines

DE Stephens, OV Larionov - European journal of organic …, 2014 - Wiley Online Library
A base‐mediated regioselective electrophilic addition of arenediazonium salts at the C3‐
position of tryptamines followed by cyclization provides an efficient entry to C3‐nitrogenated …

A base-mediated aerobic oxidative synthesis of cyclopent-2-enol derivatives from doubly activated cyclopropanes and substituted acetonitriles

XD Han, GL Peng, W Xiong, R Gan, JP Fu… - Organic & …, 2022 - pubs.rsc.org
We report here that polysubstituted cyclopent-2-enols can be constructed by the one-pot
reaction of doubly activated cyclopropanes and α-EWG substituted acetonitriles under mild …