New 3-(D-gafucto-pentitol-I-yl)pyrazole derivatives have been obtained by the reaction of Dgalactose hydrazones and nitroalkenes. Cyclodehydration of the I-methyl-3-(D-galacto-pentitol-l-yl)pyrazoles in trifluoroacetic acid at room temperature afforded good yields of 3-(r-D-lyxofuranosyl)-l-methyl d
Cyclodehydration of 3-(d-manno-pentitol-1-yl)pyrazoles: Synthesis of 3-(d-arabinofuranosyl)pyrazoles
✍ Scribed by Manuel Gómez-guillén; José María Lassaletta-Simon; María Eloísa Martín-Zamora; Inmaculada Robina
- Book ID
- 102994771
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 578 KB
- Volume
- 201
- Category
- Article
- ISSN
- 0008-6215
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✦ Synopsis
Several 3-(D-manno-pentitol-I-yl)pyrazoles were cyclodehydrated by treatment with boiling aqueous 10% trifluoroacetic acid. The products were a&mixtures of 3-(D-arabinofuranosyI)pyrazoles in which the /3 anomer was the major component. The structures and configurations of these C-nucleoside analogues were assigned on the basis of their analytical and spectral data, and those of the triacetates.
📜 SIMILAR VOLUMES
## Abstract This paper presents the synthesis of 1‐[(pyrazol‐3‐yl)methyl]pyridazin‐6‐ones from ethyl 4‐(4,5‐dichloro‐6‐oxopyridazin‐1‐yl)‐3‐oxobutanoate.