124887-50-9

Upstream product

• 124887-49-6 benzyl (7-benzyloxy-3,4-dihydro-4-oxo-2H-1-benzopyran-3-yl)acetate 
• 124887-46-3 3-bromo-2,3-dihydro-7-hydroxy-4H-1-benzopyran-4-one 
• 124887-47-4 diethyl (3,4-dihydro-7-hydroxy-4-oxo-2H-1-benzopyran-3-yl)malonate 
• 124887-48-5 3,4-dihydro-7-hydroxy-4-oxo-2H-1-benzopyran-3-ylacetic acid 
• 76240-27-2 7-hydroxy-2,3-dihydro-4H-chromen-4-one 

Downstream Products

• 124887-51-0 cis-7-benzyloxy-3a,9b-dihydro-4H-furo<3,2-c><1>benzopyran-2(3H)-one 
• 117112-43-3 cis-7-benzyloxy-3a,9b-dihydro-3-methylene-4H-furo<3,2-c><1>benzopyran-2(3H)-one 
• 117112-46-6 cis-3-benzyloxy-6a,11a-dihydro-8-(3-methylbut-2-enyl)-6H-benzofuro<3,2-c><1>benzopyran-9-ol 
• 124887-52-1 cis-7-benzyloxy-4-hydroxychroman-3-yl-3,3-bis(ethylthio)-6-hydroxycyclohex-5-en-4-one 
• 117112-47-7 cis-9-acetoxy-3-benzyloxy-6a,11a-dihydro-8-(3-methylbut-2-enyl)-6H-benzofuro<3,2-c><1>benzopyran 
• 117112-49-9 cis-7-benzyloxy-4-hydroxychroman-3-yl-3,3-bis(ethylthio)cyclohexane-4,6-dione 

Relevant academic research and scientific papers

Total Synthesis of Sophorapterocarpan A, Maackiain, and Anhydropisatin: Application of a 1,3-Michael-Claisen Annulation to Aromatic Synthesis

A new synthetic route to the pterocarpans using a annulation is described. 1,3-Michael-Claisen condensation of α-methylene-γ-butyrolactones with α-sulphur-substituted ketones gives 6-membered rings which have been converted into the pterocarpan framework by aromatization.Sophorapterocarpan A, maackiain, and anhydropisatin have been prepared employing this new aromatic synthesis.