苏糖
苏糖[2][3](英語:,C4H8O4),又名異赤藻糖,在分类上属于丁糖与醛糖,从费希尔式的角度看,中间两个碳原子上的羟基在碳骨架的异侧。
苏糖[1] | |
---|---|
IUPAC名 (2S,3R)-2,3,4-Trihydroxybutanal (D) (2R,3S)-2,3,4-Trihydroxybutanal (L) | |
别名 | Threotetrose |
识别 | |
CAS号 | 95-43-2((D)) 95-44-3((L)) |
PubChem | 439665((D)) |
ChemSpider | 388736 |
SMILES |
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InChI |
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InChIKey | YTBSYETUWUMLBZ-QWWZWVQMBY |
ChEBI | 28587 |
性质 | |
化学式 | C4H8O4 |
摩尔质量 | 120.1 g·mol−1 |
外观 | 漿狀 |
溶解性(水) | 非常易溶 |
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。 |
赤式和苏式
有机化学的习惯命名法中,使用“苏”或“苏式”("threo")表示相邻两碳相同官能团在费歇尔投影式中处于异侧的构型。[4]这种命名源自苏糖的构型。相对的,两个官能团在同侧的为赤式构型("erythro")。[4][5]赤式和苏式为差向异构体。
参考文献
- Merck Index, 11th Edition, 9317
- . terms.naer.edu.tw. [2022-05-09].
- Formulas Using Other Configurational Notations (页面存档备份,存于), W. Rausch, accessed 1 March 2011
- Prof. Rausch helpfully notes that the prefixes "may be applied to racemic compounds, as well as pure enantiomers and meso compounds", and that when depicted in the common "zig-zag" representation, adjacent "substituents may lie on the same side of the carbon chain... [syn] or on opposite sides... [anti]", which is opposite of their depiction in a Fischer projection.
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