“K‐synthesis”: recent advancements in natural product synthesis enabled by unique methods and strategies development in Korea

S Han - Bulletin of the Korean Chemical Society, 2023 - Wiley Online Library
Natural product synthesis has lain at the heart of organic chemistry. Complex structures of
natural products have inspired chemists to develop new methods and strategies. The utility …

Synthetic Methods for 3, 4‐Fused Tricyclic Indoles via Indole Ring Formation

T Nemoto, S Harada, M Nakajima - Asian Journal of Organic …, 2018 - Wiley Online Library
Fused tricyclic indole frameworks are found in various bioactive natural products and
pharmaceuticals. The development of an efficient synthetic method for this structural motif …

Synthesis of 3, 4-fused tricyclic indoles through cascade carbopalladation and C–H amination: Development and total synthesis of rucaparib

C Cheng, X Zuo, D Tu, B Wan, Y Zhang - Organic Letters, 2020 - ACS Publications
3, 4-Fused tricyclic indole scaffolds are ubiquitous in bioactive natural products and
pharmaceuticals. A new protocol for the synthesis of 3, 4-fused tricyclic indoles has been …

A Synthetic Route to Tetrahydro-1H-azepino[4,3,2-cd]indoles via Ring-Opening Cyclization of Activated Azetidines with 4-Bromoindole: Toward a Vasopressin V2 …

G Goswami, B Singh, IA Wani, A Mal… - The Journal of Organic …, 2024 - ACS Publications
A simple one-pot, two-step strategy for the synthesis of tetrahydro-1 H-azepino [4, 3, 2-cd]
indoles via Lewis acid-catalyzed SN2-type ring opening of activated azetidines with 4 …

Intramolecular Fischer indole synthesis for the direct synthesis of 3, 4-fused tricyclic indole and application to the total synthesis of (−)-aurantioclavine

J Park, DH Kim, T Das, CG Cho - Organic letters, 2016 - ACS Publications
Aryl hydrazides with a ketone or aldehyde containing side chains linked to the meta-position
of the aromatic ring undergo acid-promoted intramolecular Fischer indole synthesis to …

Rhodium (III)-catalyzed intramolecular amidoarylation and hydroarylation of alkyne via C–H activation: switchable synthesis of 3, 4-fused tricyclic indoles and …

X Zhang, Y Li, H Shi, L Zhang, S Zhang… - Chemical …, 2014 - pubs.rsc.org
The controllable intramolecular amidoarylation and hydroarylation of alkynes has been
achieved via rhodium (III)-catalyzed C–H activation. The merger of two distinct reaction …

Rhodium-catalyzed intramolecular annulation via C–H activation leading to fused tricyclic indole scaffolds

P Tao, Y Jia - Chemical Communications, 2014 - pubs.rsc.org
The rhodium (III)-catalyzed intramolecular annulation of alkyne-tethered acetanilides for the
synthesis of fused tricyclic indole scaffolds via C–H activation has been developed, which …

[HTML][HTML] Recent advances in the development of one-pot/multistep syntheses of 3, 4-annulated indoles

R Connon, PJ Guiry - Tetrahedron Letters, 2020 - Elsevier
Many naturally occurring indole alkaloids and biologically interesting compounds, such as
the ergot alkaloids, contain the C 3/C 4-annulated indole scaffold. These important …

Switching chemoselectivity based on the ring size: how to make ring-fused indoles using transition-metal-mediated cross-coupling

JY Kim, W Lee, HJ Kang, TH Jeon, MH Baik… - ACS …, 2021 - ACS Publications
Pyrroloazocine indole alkaloids consisting of eight-membered azacycle fused to pyrrole and
indole units exhibit intriguing pharmacological functions but still pose a synthetic challenge …

Pd-Catalyzed Cascade Cyclization by Intramolecular Heck Insertion of an Allene–Allylic Amination Sequence: Application to the Synthesis of 3, 4-Fused Tricyclic …

S Nakano, N Inoue, Y Hamada, T Nemoto - Organic letters, 2015 - ACS Publications
A novel Pd-catalyzed cascade cyclization by intramolecular Heck insertion of an allene–
allylic amination sequence was developed. Allenes tethered to ortho-iodoaniline derivatives …