Diastereoselective syntheses of 2-β-d-glucopyranosyloxy-2H-1,4-benzoxazin-3(4H)-ones from gramineae
✍ Scribed by Holger Hartenstein; Carla Vogt; Ingo Förtsch; Dieter Sicker
- Book ID
- 103341850
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 316 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0031-9422
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📜 SIMILAR VOLUMES
## Abstract Substituted 2‐(benzylamino)‐2__H__‐1,4‐benzoxazin‐3(4__H__)‐ones are unstable under alkaline and acidic conditions, undergoing opening of the benzoxazinone ring. 2‐Bromo‐2__H__‐1,4‐benzoxazin‐3(4__H__)‐ones show similar degradation under alkaline conditions, while replacement of Br at C
2-Hydroxy-4,7-dimethoxy-2H-1,4-benzoxazin-3(4H)-one (8), the hitherto undescribed free hemiacetalic agiyeone of a benzoxazinoid acetal glucnside naturally occurring in wheat, has been synthesized following two pathways, independently. This cyclic hydroxamic acid methyl ester proved to be very unstab