What is the a and b form of both d-altrose and L-altrose drawn in ring structures
What is the a and b form of both d-altrose and L-altrose drawn in ring structures
What is the identify of compound A and B?
D-allose
L-allose
D-altrose
L-altrose
D-arabinose
L-arabinose
D-erythrose
L-erythrose
D-erythrulose
L-erythrulose
D-fructose
L-fructose
D-galactose
L-galactose
D-glucose
L-glucose
D-glyceraldehyde
L-glyceraldehyde
D-gulose
L-gulose
D-idose
L-idose
D‐lyxose
L‐lyxose
D-mannose
L-mannose
D‐psicose
L‐psicose
D-ribose
L-ribose
D-ribulose
L-ribulose
D-sorbose
L-sorbose
D-tagatose
L-tagatose
D-talose
L-talose
D-threose
L-threose
D‐xylose
L‐xylose
D-xylulose
L-xylulose
None of the above
What is the identify of compound A? CH2OH HO OH OH OH Compound A
3. Draw by hand and name the following monosaccharides a. anomer of a-D-altrose b. enantiomer of D-altrose c. The pyranose and furanose forms of D-altrose d. The epimer of D-altrose e. A diasteroisomer of D-altrose f. What is the relationship between the following: - i. D-psicose and D-fructose - ii. D-fructose and D-sorbose - iii. glucose and sucrose - iv. a-D-glucopyranose and a-D-glucofuranoseType
D-Allose undergoes enolisation and isomerisation in base to produce D-altrose (another aldohexose). Complete the mechanism by drawing curved arrows and completing the structure of the enolate intermediate. Do not delete any of the pre-drawn structures. All non-bonding electrons must be showr. Note: If you make a mistake, press the red arrows button in the tools menu to reset the relevant structure. D-allose and hydroxide Enolate intermediate D-altrose and hydroxide OH O: 0: 해 HO OH '해 해 OH QH OH...
A rectangular ring has dimensions (d⋅l) as shown in the figure.
Ring B enters the region of the magnetic field with a constant
velocity v. What is the EMF formed in this ring?
•) Bvd
•) Bl/v
•) Bv/l
•) Bv/d
•) B/(vd)
•) Bd/v
•) Bvld
•) Bvl
•) B/(vl)
direction of motion х X X Х x х d X х х Х Х Х X X X
11.a) Draw the open chain (Fischer) structure of D-altrose.
(1pt)
(b) How many chiral centers are in D-altrose? ______ (1pt)
(c) What is the maximum number of possible stereoisomers whch
can exist for D-altrose? _____ (1pt)
(d) Draw L-altrose in open chain form (use Fischer projection) –
you may use the space above. (1pt)
(e) Use the information above to draw a Haworth projection for
alpha-D-altropyranose. (2pt)
Ruff degradation on a monosaccharide causes C1 to be lost as
carbon dioxide,...
Algebraic structures
1. Consider the ring M = {Ia al: a, b, c, d e Z2} under entry-wise addition and standard matrix multiplication. a. What are the units of this ring? b. Determine whether or not it is an integral domain. 2. Consider the ring Z * ZZ under component-wise addition and multiplication. a. What are the units of this ring? b. Let I = ( (2,1,1)) and J = ( (1,3,1)) be principal ideals. Show that their intersection is...
Identify the following (A-E) as an enantiomer, epimer, or a
diastereoisomer of L-altrose.
Question 4 (5 points) aniy cetwtrg (A-b)as enantinmer. piner rdastermeaianaerd L-dliroa CHO OH CH2OH B) CHO CHO HO OH OH OH OH OH CH2OH CH2OH ved D) E) CHO CHO CHO
write the missing structures
3) Write the missing structures 3 points a) ring flip Brzor b) Newman projection of a gauche form of 1,2-diiodoethane c) The most stable conformation of trans-1-fluoro-3-isopropylcyclohexane
11. Draw the structures of a-D-glucose and D-mannose (both cyclic form). Which bond(s) in a-D-glucose must be broken to change its configuration to B-D-glucose? Which bond(s) to convert D-glucose to D-mannose? Which bond(s) to convert one "chair" form of D-glucose to the other?
1. Drawing of carbohydrate structures (2.5 pts) - a) Draw the ring structures of the trisaccharide Glucose-Galactose- Fructose connected by beta-1,4 glycosidic linkages. b) In the trisaccharide structure you have drawn, circle each glycosidic linkage and point with an arrow each free anomeric hydroxyl group (i.e. not modified by glycosidic linkage).