Chemoselective reduction of 3-arylmethylidenetetrahydrofuran-2,4-diones with triethylsilane and sodium cyanotrihydridoborate in acid media
摘要:
3-Arylmethylidenetetrahydrofuran-2,4-diones were smoothly reduced to the corresponding 3-benzyl derivatives in 50-98% yield with triethylsilane in trifluoroacetic acid or with sodium cyanotrihydridoborate in the system tetrahydrofuran-2 N hydrochloric acid. The reduction of 3-(3-arylprop-2-en-1-ylidene)-tetrahydrofuran-2,4-diones with sodium cyanotrihydridoborate gave 3-cinnamyltetrahydrofuran-2,4-diones as the only products.
Chemoselective reduction of 3-arylmethylidenetetrahydrofuran-2,4-diones with triethylsilane and sodium cyanotrihydridoborate in acid media
摘要:
3-Arylmethylidenetetrahydrofuran-2,4-diones were smoothly reduced to the corresponding 3-benzyl derivatives in 50-98% yield with triethylsilane in trifluoroacetic acid or with sodium cyanotrihydridoborate in the system tetrahydrofuran-2 N hydrochloric acid. The reduction of 3-(3-arylprop-2-en-1-ylidene)-tetrahydrofuran-2,4-diones with sodium cyanotrihydridoborate gave 3-cinnamyltetrahydrofuran-2,4-diones as the only products.
Heterocyclic analogs of prostaglandines: IV. Synthesis of 3,7-interphenylene 3,10(11)-dioxa-13-azaprostanoids and 9-oxa-7-azaprostanoids based on tetronic acid and aromatic aldehydes
作者:F. S. Pashkovskii、E. M. Shchukina、M. G. Gribovskii、F. A. Lakhvich
DOI:10.1134/s1070428008050047
日期:2008.5
An approach was developed to the synthesis of stable in metabolism 3,7-interphenylene 3,10-dioxa-13-aza-and 3,11-dioxa-13-azaprostanoids, and also 9-oxa-7-azaprostanoids with interphenylene and terminal phenyl fragments in the omega-chain based on 3-(alkoxybenzylidene)-and 3-(3-phenylallylidene)tetrahydrofuran-2,4-diones obtained by Knoevenagel condensation of tetronic acid with alkoxy-substituted aromatic aldehydes and cinnamic aldehyde.