Questions from Organic Chemistry

Q: Draw the nucleoside formed from each of the following pairs of compounds

Draw the nucleoside formed from each of the following pairs of compounds and name the nucleoside: a. 2-Deoxy-d-ribose and adenine   b. d-Ribose and guanine

Q: Compound A is a D-aldopentose that is converted into an

Compound A is a D-aldopentose that is converted into an optically active alditol upon treatment with sodium borohydride. Draw two possible structures for compound A.

Q: When D-glucose is treated with an aqueous bromine solution (

When D-glucose is treated with an aqueous bromine solution (buffered to a pH of 6), an aldonic acid is formed called D-gluconic acid. Treatment of D-gluconic acid with an acid catalyst produces a lact...

Q: When each of the D-aldohexoses assumes an α-pyranose

When each of the D-aldohexoses assumes an α-pyranose form, the CH2OH group occupies an equatorial position in the more stable chair conformation. The one exception is D-idose, for which the CH2OH grou...

Q: Draw the product that is expected when the β-pyranose form

Draw the product that is expected when the β-pyranose form of compound A is treated with excess ethyl iodide in the presence of silver oxide. The following information can be used to determine the ide...

Q: Explain why glucose is the most common monosaccharide observed in nature.

Explain why glucose is the most common monosaccharide observed in nature.

Q: Although most naturally occurring proteins are made up only of L amino

Although most naturally occurring proteins are made up only of L amino acids, proteins isolated from bacteria will sometimes contain d amino acids. Draw Fischer projections for D-alanine and D-valine....

Q: Identify the reagents you would use to convert cyclohexanone into each of

Identify the reagents you would use to convert cyclohexanone into each of the following compounds:

Q: Draw a bond-line structure for each of the following amino

Draw a bond-line structure for each of the following amino acids: a. L-Leucine b. L-Tryptophan c. L-Methionine d. L-Valine

Q: Of the 20 naturally occurring amino acids shown in Table 25.

Of the 20 naturally occurring amino acids shown in Table 25.1, identify any amino acids that exhibit the following: a. A cyclic structure b. An aromatic side chain c. A side chain with a basic grou...