2016年4月21日 · My lecture notes describe epimers as compounds which differ by configuration at only one carbon and gives the example of D-erythrose and D-threose as being epimers. …

2018年8月28日 · epimers are the class of stereoisomers which differ along configuration at any carbon in a carbohydrate (generally), And anomers are the kind of stereo isomers that differ at …

2017年5月20日 · Glucose and Galactose are best described as epimers of one another. The three structures below all have the same molecular formula and the same connectivity, but differ in …

2022年9月26日 · I am really struggling with converting pyrano/furanosides into their Fisher projection counterparts. Especially when they are drawn like in the shown projection. When do …

2020年1月5日 · some but not all are switched, it is a diastereomer. all are switched, it is an enantiomer (or meso compound). Open-chain carbohydrates are a good example (compare D …

2015年4月5日 · Because of the rapid interconversion, tautomers are generally considered to be the same chemical compound. (Wikipedia) But looking at the examples provided on that same …

2019年6月8日 · Acid Catalysed Halogenation of ketone In the halogenation of ketones, both in acidic and basic medium, enols are reactive intermediates. After addition of first halogen to …

2016年1月26日 · The D-L system corresponds to the configuration of the molecule: spatial arrangement of its atoms around the chirality center. While (+) and (-) notation corresponds to …

2017年1月12日 · The first things to note when drawing Fischer projections are the general rules for drawing them. The first general rule concerns the choices of ‘top’ and ‘bottom’ while the …

2016年11月9日 · In a Haworth projection, the hexagonic shape of the ring already implies the direction of two bonds. The two bonds on the ring are always ‘bent ring-inwards’ when viewed …