77519-37-0Relevant academic research and scientific papers
Silenes in organic synthesis: A concise synthesis of (±)-epi- picropodophyllin
Pullin, Robert D. C.,Sellars, Jonathan D.,Steel, Patrick G.
, p. 3201 - 3206 (2008/04/01)
A concise, seven step synthesis of the aryl tetralin lignan lactone epi-picropodophyllin from piperonal is described. The key steps are a silene diene Diels-Alder reaction and the Hosomi-Sakurai reaction of the resultant silacyclohexene. The Royal Society
A new and efficient strategy for the synthesis of podophyllotoxin and its analogues
Wu, Yingming,Zhang, Hongbin,Zhao, Yuanhong,Zhao, Jingfeng,Chen, Jingbo,Li, Liang
, p. 1199 - 1202 (2007/12/30)
Figure presented An efficient and stereoselective strategy for the total synthesis of podophyllotoxin was developed. This route leads to podophyllotoxin 1 in only 12 steps with 29% overall yield. A notable feature of this synthetic strategy is the use of
A concise stereocontrolled formal total synthesis of (+/-)-podophyllotoxin using sulfoxide chemistry.
Casey, Mike,Keaveney, Claire M
, p. 184 - 185 (2007/10/03)
A short stereoselective formal total synthesis of (+/-)-podophyllotoxin has been carried out from a sulfoxide, using a one-pot tandem conjugate addition/aldol/electrophilic aromatic substitution reaction to form a tetralin, which was converted into picrop
A Mild Method for Selective Cleavage of Tetrahydropyranyl Ethers in the Presence of Other Acid-Labile Functionalities
Nambiar, Krishnan P.,Mitra, Abhijit
, p. 3033 - 3036 (2007/10/02)
A mild method for selective cleavage of tetrahydropyranyl ethers in the presence of other acid sensitive functionalities such as acetonides, methoxymethyl ethers, methylenedioxy ethers, mesitylaldehyde acetals and t-butyldimethylsilyl ethers using Lewis acid-thiol system is described.
Synthesis of Podophyllum Lignans via an Isolable o-Quinonoid Pyrone
Jones, David W.,Thompson, Adrian M.
, p. 2533 - 2540 (2007/10/02)
The 2-benzopyran-3-one 10 is a stable, isolable and useful Diels-Alder diene; its methyl 4-benzoyloxycrotonate adduct 23 formed regioselectively and stereoselectively in acetonitrile is reduced with H2/Pd to give 31 with inversion of C-1 stereochemistry.T
Synthesis of (+/-)-4-Deoxypodophyllotoxin, (+/-)-Podophyllotoxin and (+/-)-Epipodophyllotoxin
Jones David W.,Thompson, Adrian M.
, p. 2541 - 2548 (2007/10/02)
6,7-Methylenedioxy-1-(3',4',5'-trimethoxyphenyl)-2-benzopyran-3-one 1 and dimethyl fumarate in acetonitrile give mostly the C-2 exo-CO2Me adduct 4 which is transformed in four steps into epipodophyllotoxin 10a.Attempted addition of dimethyl maleate to 1 p
Comprehensive Synthetic Route to Eight Diastereomeric Podophyllum Lignans
Forsey, Steven P.,Rajapaksa, Dayananda,Taylor, Nicholas J.,Rodrigo, Russell
, p. 4280 - 4290 (2007/10/02)
An oxabicyclo compound, 9, prepared in 47percent yield through an isobenzofuran intermediate was converted with excellent regio- and stereocontrol to eight (+/-)-lignan lactones of the podophyllotoxin series.One of the eight, epiisopicropodophyllin, 36, t
Synthesis of Podophyllotoxin
Jones, David W.,Thompson, Adrian M.
, p. 1370 - 1371 (2007/10/02)
The alkene (2) obtained directly from the reaction of dimethyl maleate with the pyrone (1) is converted into (+/-)-podophyllotoxin (12) in seven steps and 24percent overall yield; novel steps include the epimerisation of (9) at C-3 using 1,8-diazabicyclo
A Highly Stereoselective Synthesis of Podophyllotoxin and Analogues Based on an Intramolecular Diels-Alder Reaction
Macdonald, D.I.,Durst, T.
, p. 3663 - 3669 (2007/10/02)
A synthesis of podophyllotoxin and several analogues is described.The key step that generates all four chiral centers of podophylotoxin involves an intramolecular Diels-Alder reaction between an appropriately substituted o-quinodimethane and a pendant cro
