J Li, Y Ye, Y Zhang - Organic Chemistry Frontiers, 2018 - pubs.rsc.org
Pyrrolidines are privileged substructures of numerous bioactive natural products and drugs. How to synthesize these important synthetic targets in a more efficient manner is a hot …
Y Jin, S Hok, J Bacsa, M Dai - Journal of the American Chemical …, 2024 - ACS Publications
We report a convergent and efficient total synthesis of the C-nor D-homo steroidal alkaloid (+)-heilonine with a hexacyclic ring system, nine stereocenters, and a trans-hydrindane …
Y Guo, JT Lu, R Fang, Y Jiao, J Liu… - Journal of the American …, 2023 - ACS Publications
The Veratrum alkaloids are highly complex steroidal alkaloids characterized by their intricate structural and stereochemical features and exhibit a diverse range of pharmacological …
Sequential inter-and intramolecular [3+ 2] cycloadditions of azomethine ylides are developed for the one-pot and diastereoselective synthesis of highly condensed …
P Heretsch, A Giannis - The Alkaloids: Chemistry and Biology, 2015 - Elsevier
This survey on steroidal alkaloids of the Veratrum and Solanum family isolated between 1974 and 2014 includes 187 compounds and 197 references. New developments in the …
ND Jabre, T Watanabe, M Brewer - Tetrahedron letters, 2014 - Elsevier
A ring fragmentation and intramolecular azomethine ylide 1, 3-dipolar cycloaddition sequence of reactions was successfully used in the preparation of a known (±)-cycloclavine …
LC Zhu, DL Yang, Y Shi - Organic Letters, 2022 - ACS Publications
The 5α, 6-dihydro congeners of veragranines A and B, two steroidal alkaloids with an unprecedented hexacyclic skeleton and potent analgesic effects, were synthesized from …
SK Vorontsova, AV Yadykov, AM Scherbakov… - Molecules, 2020 - mdpi.com
The acid-catalyzed cyclization of benzylidenes based on 16-dehydropregnenolone acetate (16-DPA) was studied. It was found that these compounds readily undergo regioselective …
Fragmentation reactions in synthetic organic chemistry involve substrates breaking into three or more pieces (fragments), adding degrees of unsaturation into two or more parts …