Total Syntheses of
<i>rac</i>
‐ and (+)‐Goniomitine
作者:Eunjoon Park、Cheol‐Hong Cheon
DOI:10.1002/adsc.201900801
日期:2019.11.5
Concise totalsyntheses of rac‐ and (+)‐goniomitine were developed. The cyanide‐catalyzed imino‐Stetter reaction of an aldimine, derived from ethyl 2‐aminocinnamate and either rac‐ or (S)‐α,β‐unsaturated aldehyde bearing a δ‐valerolactam at the β‐position, provided rac‐ or (S)‐indole‐3‐acetate carrying an α‐vinyl‐δ‐valerolactam scaffold at the 2‐position, respectively. Subsequent saturation of the
An Efficient Protocol for the Palladium-Catalyzed Asymmetric Decarboxylative Allylic Alkylation Using Low Palladium Concentrations and a Palladium(II) Precatalyst
作者:Alexander N. Marziale、Douglas C. Duquette、Robert A. Craig、Kelly E. Kim、Marc Liniger、Yoshitaka Numajiri、Brian M. Stoltz
DOI:10.1002/adsc.201500253
日期:2015.7.6
catalytic allylic alkylation for the synthesis of 2‐alkyl‐2‐allylcycloalkanones and 3,3‐disubstituted pyrrolidinones, piperidinones and piperazinones has been previously reported by our laboratory. The efficient construction of chiral all‐carbon quaternary centers by allylic alkylation was previously achieved with a catalyst derived in situ from zero‐valent palladium sources and chiral phosphinooxazoline
Total Synthesis of Strempeliopidine and Non-Natural Stereoisomers through a Convergent Petasis Borono–Mannich Reaction
作者:Alexander W. Rand、Kevin J. Gonzalez、Christopher E. Reimann、Scott C. Virgil、Brian M. Stoltz
DOI:10.1021/jacs.2c13146
日期:——
Strempeliopidine is a member of the monoterpenoid bisindole alkaloid family, a class of natural products that have been shown to elicit an array of biological responses including modulating protein–protein interactions in human cancer cells. Our synthesis of strempeliopidine leverages palladium-catalyzed decarboxylative asymmetric allylic alkylations to install the requisite all-carbon quaternary centers