Stereodivergent Total Syntheses of (+)‐Monomorine I and (+)‐Indolizidine 195B
作者:Rafid S. Dawood、Robert A. Stockman
DOI:10.1002/ejoc.202100453
日期:2021.7.22
Diastereoselective addition to a single sulfinimine allows for stereodivergeant synthetic approaches towards two related natural products monomorine and indolizidine 195B via closed or open transition states.
Total synthesis of (+)-Indolizidine 195 B and (+)-Monomorine
作者:Guy Solladié、Guo-Hua Chu
DOI:10.1016/0040-4039(95)02086-1
日期:1996.1
The total synthesis of (+)-Indolizidine 195 B and (+)-Monomorine is described. The formation of the chiral centers was stereocontrolled by chiral sulfoxides.
描述了(+)-吲哚并立定195 B和(+)-莫诺林的总合成。手性中心的形成是由手性亚砜立体控制的。
A short, practical synthesis of the ant venom alkaloid, three (3R,5S,8aS)-3-alkyl-5-methylindolizidines
作者:Hiroki Takahata、Hiroshi Bandoh、Takefumi Momose
DOI:10.1016/s0040-4020(01)81807-x
日期:1993.1
has been developed. The stereoselectiveintramolecularamidomercuration of the N-alkenylurethane 4 followed by oxidative demercuration provides the piperidine alcohol cis-6 as a major product. Thereafter, oxidation of cis-6 followed by the Horner-Emmons elongation of the ring appendages affords the enones 8, 10, and 11, which are stereoselectively converted into 1, 2, and 3, respectively, by catalytic
Au-catalyzed stereodivergent synthesis of 2,5-disubstituted pyrrolidines: total synthesis of (+)-monomorine I and (+)-indolizidine 195B
作者:Hayato Nakagawa、Haruhiko Fuwa
DOI:10.1039/d3cc02453a
日期:——
Stereodivergent synthesis of 2,5-disubstituted pyrrolidines was achieved via a Au-catalyzed tandem intramolecular alkyne hydroamination/iminium formation/Et3SiH reduction. Importantly, the stereochemical outcome could be switched by choosing an appropriate nitrogen protecting group. Total synthesis of a diastereomeric pair of alkaloid natural products, monomorine I and indolizidine 195B, was achieved
2,5-二取代吡咯烷的立体发散合成是通过Au催化的串联分子内炔氢胺化/亚胺形成/Et 3 SiH还原实现的。重要的是,可以通过选择合适的氮保护基团来改变立体化学结果。生物碱天然产物 monomorine I 和 indolizidine 195B 的非对映体对的全合成,展示了串联反应的合成效用。
General entry to the 3,5-disubstituted indolizidine class of dendrobatid alkaloids. Total syntheses of both enantiomers of indolizidines 195B, 223AB, 239AB, and 239CD from a common chiral synthon