Journal ArticleDOI
947. The alkaloids of the amaryllidaceae. Part IV. The alkaloids of brunsvigia cooperi baker
About:
This article is published in Journal of The Chemical Society (resumed).The article was published on 1958-01-01. It has received 15 citations till now. The article focuses on the topics: Brunsvigia.read more
Citations
More filters
Journal ArticleDOI
Application of a Stereospecific Intramolecular Allenylsilane Imino Ene Reaction to Enantioselective Total Synthesis of the 5,11-Methanomorphanthridine Class of Amaryllidaceae Alkaloids
J. Jin,Steven M. Weinreb +1 more
TL;DR: In this paper, the pentacyclic 5,11methanomorphanthridine Amaryllidaceae alkaloids (−)-montanine (1), (−)-coccinine (2), and (−)-pancracine (3) were achieved using an intramolecular concerted pericyclic allenylsilane imino ene cycloaddition as a key step.
Journal ArticleDOI
Asymmetric formal synthesis of (-)-pancracine via catalytic enantioselective C-H amination process
Masahiro Anada,Masahiko Tanaka,Naoyuki Shimada,Hisanori Nambu,Minoru Yamawaki,Shunichi Hashimoto +5 more
TL;DR: In this paper, the insertion of nitrene species into an allylic C-H bond of silyl enol ethers has been shown to yield an advanced intermediate in Overman's synthesis of the montanine-type Amaryllidaceae alkaloid (−)-pancracine.
Journal ArticleDOI
Chemoenzymatic approaches to the montanine alkaloids: a total synthesis of (+)-brunsvigine.
TL;DR: The readily available and enzymatically derived cis-1,2-dihydrocatechols 3a and 3b have been elaborated over 17 steps, including a novel radical addition/elimination sequence, into the enantiomer, (+)-1, of the montanine alkaloid brunsvigine.
Journal ArticleDOI
Stereospecific route to 5,11-methanomorphanthridine alkaloids via intramolecular 1,3-dipolar cycloaddition of nonstabilized azomethine ylide: formal total synthesis of (+/-)-pancracine.
TL;DR: The core structure of the complex pentacyclic 5,11-methanomorphanthridine alkaloids is constructed stereospecifically in one step employing an intramolecular [3 + 2]-cycloaddition of nonstabilized azomethine ylide as the key step.
Journal ArticleDOI
Alkaloids and triterpenoids from Ammocharis coranica (Amaryllidaceae)
TL;DR: The bulbs of Ammocharis coranica yielded eight alkaloids: lycorine, acetylcaranine and crinamine, which have been reported previously from other members of the Amaryllidaceae, and also 24-methylenepollinastanone, which has not been described previously.
Related Papers (5)
Application of a Stereospecific Intramolecular Allenylsilane Imino Ene Reaction to Enantioselective Total Synthesis of the 5,11-Methanomorphanthridine Class of Amaryllidaceae Alkaloids
J. Jin,Steven M. Weinreb +1 more