Carbohydrate Structure Aldopentoses and Ketopentoses

The video tutorial explores the cyclization of carbohydrates, focusing on aldoses and ketoses, particularly pentoses like D-ribose and ribulose. It explains the stability of different ring structures, emphasizing the preference for five-membered furanose rings in ribose due to hydrogen bonding. The tutorial also discusses the limited cyclization of ribulose and general rules for carbohydrate cyclization, highlighting the instability of four-membered and seven-membered rings.

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