40709-29-3Relevant academic research and scientific papers
A gram-scale batch and flow total synthesis of perhydrohistrionicotoxin
Brasholz, Malte,MacDonald, James M.,Saubern, Simon,Ryan, John H.,Holmes, Andrew B.
experimental part, p. 11471 - 11480 (2010/11/24)
The total synthesis of the spi- ropiperidine alkaloid (-)-perhydrohis- trionicotoxin (perhydro-HTX) 2 has been accomplished on a gram scale by employing both conventional batch chemistry as well as microreactor techniques. )-6-Pentyltetrahydro- pyran-2-one 8 underwent nucleophilic ring opening to afford the alcohol 10, which was elaborated to the nitrone 13. Protection of the nitrone as the 1,3- adduct of styrene and side-chain extension to the unsaturated nitrile afforded a precursor 17, which underwent dipolar cycloreversion and 1,3-dipolar cycloaddition to give the core spirocyclic precursor 18 that was converted into perhydro-HTX 2. The principal steps to the spirocycle 18 have successfully been transferred into flow mode by using different types of microreactors and in a telescoped fashion, allowing for a more rapid access to the histrioni- cotoxins and their analogues by continuous processing.
Total synthesis of (-)-histrionicotoxin 285A and (-)- perhydrohistrionicotoxin
Macdonald, James M.,Horsley, Helen T.,Ryan, John H.,Saubern, Simon,Holmes, Andrew B.
supporting information; experimental part, p. 4227 - 4229 (2009/06/06)
(Chemical Equation Presented) Starting from commercially available (S)-glycidol, and via a common intermediate, the total synthesis of (-)-histrionicotoxin 285A and (-)-perhydrohistrionicotoxin has been achieved. Key to this synthesis was the efficient co
A two-directional synthesis of (+/-)-perhydrohistrionicotoxin.
Stockman, Robert A,Sinclair, Alex,Arini, Louise G,Szeto, Peter,Hughes, David L
, p. 1598 - 1602 (2007/10/03)
An entirely two-directional synthesis of (+/-)-perhydrohistrionicotoxin is presented, utilizing a tandem oxime formation/Michael addition/[3 + 2] cycloaddition as the key step. This approach also constitutes formal syntheses of (+/-)-histrionicotoxin and (+/-)-histrionicotoxin 235A.
A Novel and Highly Stereoselective Approach to Aza-Spirocycles. A Short Total Synthesis of 2-epi-(±)-Perhydrohistrionicotoxin and an Unprecedented Decarboxylation of 2-Pyrones
McLaughlin, Michael J.,Hsung, Richard P.,Cole, Kevin P.,Hahn, Juliet M.,Wang, Jiashi
, p. 2017 - 2020 (2007/10/03)
(Matrix Presented) A novel and highly stereoselective synthesis of aza-spirocycles is described. An application of this methodology is illustrated as a short and concise total synthesis of 2-epi-(±)-perhydrohistrionicotoxin with high diastereomeric contro
Photochemical reactions of chiral 2,3-dihydro-4(1H)-pyridones: Asymmetric synthesis of (-)-perhydrohistrionicotoxin
Comins, Daniel L.,Zhang, Yue-Mei,Zheng, Xiaoling
, p. 2509 - 2510 (2007/10/03)
The first chiral auxiliary-mediated asymmetric synthesis of (-)-perhydrohistrionicotoxin is described.
A Stereoselective Synthesis of (-)-Perhydrohistrionicotoxin
Winkler, Jeffrey D.,Hershberger, Paul M.
, p. 4852 - 4856 (2007/10/02)
The first synthesis of (-)-perhydrohistrionicotoxin, 2, which proceeds without recourse to resolution of synthetic intermediates is reported.The absolute stereochemistry is derived from L-glutamic acid, and the key step, in which the critical relative ste
Highly Stereoselective Ring Contraction of Heterocyclic Enamines: Total Synthesis of Perhydrohistrionicotoxin and Its 2,6-Epimer
Duhamel, Pierre,Kotera, Mitsuharu,Monteil, Thierry,Marabout, Benoit,Davoust, Daniel
, p. 4419 - 4425 (2007/10/02)
The total syntheses of perhydrohistrionicotoxin (PHTX) and its 2,6-epimer in which the pentyl group, introduced in the early stages, controls the relative configuration of C6 in a highly stereoselective manner are described.Seven-membered heterocyclic ena
THE STEREOCHEMISTRY OF SPIROPIPERIDINE CYCLIZATIONS (HISTRIONICOTOXIN, PART I)
Glanzmann, Michael,Karalai, Chatchanok,Ostersehlt, Bernd,Schoen, Uwe,Frese, Christiane,Winterfeldt, Ekkehard
, p. 2805 - 2810 (2007/10/02)
The spirocyclization of straight-chain triketo-intermediates, similar to possible biogenetic precursors of histrionicotoxin, is shown to be stereoselective, generating the non-natural configuration at C-2.Aiming at an sp2-center in this positio
