Carbohydrates, or in strictly chemical terms, polyhydroxy‐aldehydes or ketones represent enormous structural diversity in terms of the arrangement of atoms in space, resulting in hundreds of stereoisomers. Although the chemical properties of most stereoisomers may not be very different, their metabolic fate and utilization in biological systems is significantly different and known to influence the overall carbohydrate metabolism. This dictates the importance of understanding the structures of various stereochemical structures for a biochemist. At graduate level teaching, it is really a challenging task to correlate, connect, and recall all the structures. Conventional teaching methods and standard textbook illustrations seldom enable the learners and instructors to sustain the information for a prolonged period. We, in this article, present a unique approach and introduce sigma notation rules for the correlation of stereochemistry of carbohydrates in order to enhance the understanding of stereochemical structures. © 2019 International Union of Biochemistry and Molecular Biology, 48(1):8–20, 2020.

中文翻译：

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向研究生和研究生教授己糖的结构多样性：关联立体化学的方法

碳水化合物，或严格意义上的化学术语，多羟基醛或酮在空间原子排列方面表现出巨大的结构多样性，从而产生数百种立体异构体。尽管大多数立体异构体的化学性质可能没有很大不同，但它们在生物系统中的代谢命运和利用却有很大不同，并且已知会影响整体碳水化合物代谢。这决定了生物化学家了解各种立体化学结构的重要性。在研究生阶段的教学中，关联、连接和回忆所有结构确实是一项具有挑战性的任务。传统的教学方法和标准的教科书插图很少使学习者和教师能够长时间维持信息。我们在这篇文章中，提出了一种独特的方法，并介绍了碳水化合物立体化学相关性的 sigma 符号规则，以增强对立体化学结构的理解。© 2019 国际生物化学与分子生物学联盟，48(1):8–20，2020。