156041-33-7Relevant academic research and scientific papers
An Approach to the Synthesis of Stenine
Zhu, Liang,Lauchli, Ryan,Loo, Mandy,Shea, Kenneth J.
, p. 2269 - 2271 (2008/02/05)
A type 2 N-acylnitroso intramolecular Diels-Alder reaction followed by reductive N - O bond cleavage formed the B and C rings of the Stemona alkaloid stenine. Further elaboration provided the functionalized tricyclic core.
Anionic Cycloaddition with Thiophthalides: an Integrated Approach to the Synthesis of Olivin and Pillaromycinone
Majumdar, Gita,Pal, Ranjan,Murty, Kadiyala V. S. N.,Mal, Dipakranjan
, p. 309 - 316 (2007/10/02)
A systematic study of the potential reactivity of the thiophthalides 4 and 18 - 20 as 1,4-dipolar synthons, has shown that 3-phenylthiothiophthalide 19 is the best annulating agent for the preparation of tricyclic intermediates related to olivin.The reagent 19 underwent anionic cycloaddition with cyclohex-2-enone 5a in the presence of lithium tert-butoxide to give the anthracenones 24a and 25 in a combined yield of 90percent.
