Monosaccharide derivatives, Biology

MONOSACCHARIDE DERIVATIVES

They are modified monosaccharides.

GLYCOSIDES

  • They are compounds formed by condensation reaction between a sugar and hydroxyl group of another substance which may be a sugar, a sterol, glycerol, methyl alcohol, etc.
  • Streptomycin is a glycoside.
  • Other medicinally important ones are cardiac glycosides.

ALCOHOLIC SUGAR

  • When aldehyde group of monosaccharide is converted into alcohol (OH) group, then it is called alcoholic sugar.
  • Glucose → Sorbitol
  • Mannose → Mannitol
  • Reduction of aldehyde and ketone group converts a sugar into sugar alcohol.
  • Ascorbic acid or vitamin C is sugar acid.
  • Glucouronic acid and iduronic acid are components of chondroitin sulphate, cell wall and gums.

AMINO SUGARS (HEXOSAMINES)

  • When -OH group of second carbon converted into -NH then it is called amino sugar.
  • Glucose → Glucosamine
  • They are generally formed by replacement of hydroxyl group at carbon 2 with amino group (-NH ).
  • Glucosamine is the most common amino sugar that occurs in chitin, fungal wall and hyaluronic acid.
  • Galactosamine is used in synthesis of cartilage.
  • Mannosamine is found in mucoprotein.
  • Amino sugars also occur in some antibiotics.
Posted Date: 10/9/2012 3:29:21 AM | Location : United States







Related Discussions:- Monosaccharide derivatives, Assignment Help, Ask Question on Monosaccharide derivatives, Get Answer, Expert's Help, Monosaccharide derivatives Discussions

Write discussion on Monosaccharide derivatives
Your posts are moderated
Related Questions
Q. What are the examples of secretory cells? Endocrine and exocrine pancreatic cells, parathyroid and thyroid endocrine cells, adenohypophysis, adrenal and pineal endocrine cel

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Describe Protocol that are used for Endotracheal Intubation in ICU Intubation is a three person procedure; skilled assistance is mandatory: • "Top end" intubator who coordi

Explain the summary of morbidity  in CAD? i) The prevalence of CAD among immigrant Indians is about three-fold higher than in comparable indigenous populations; ii) CAD tends t

Q. What are the positions of myosin and actin molecules in the sarcomere before and during the muscle contraction? Schematically actin filaments attached perpendicularly to bot

Q. What are NADPH and NADP? NADP is the short form of the nicotinamide adenine dinucleotide phosphate cation, a hydrogen acceptor. NADPH is made when NADP binds to one hydrogen

How are the plant tissues classified according to their functions? Plant tissues are separated into growth (embryonic) tissues, supporting, filling and photosynthetic tissues (

Define Deuterostomes in animal kingdom? Coelomate animals are thought to have separated into two divergent lines of evolution in terms of the way embryos develop. In the embryo

Which two of the following changes (a - d) usually tend to occur in the plain dwellers when they move to high altitudes (3,500 m or more)? 1. Enhance in red blood cell size 2

Define the Blood coagulation - Function of Vitamin K? The primary function of vitamin K in the body is in the maintenance of normal blood coagulation. The vitamin K-dependent c