II. Analysis. Given below is a schematic diagram for a simple analysis of a novel tetrasaccharide isolated from a new species of red algae. Analyze each step and the accompanied results of tests, and answer the succeeding questions: A H B H c H 0 a1,4-endoglycosidase treatment A B C Benedict's test: (+) Seliwanoff's test: (-) Fehling's test: (+). Seliwanoff's test: (-) Bial's-Orcinol test: (+) Bial's-Orcinol test: (-) Osazone test: needle- like crystals, 2N HCI, 100°C, 60 mins. D Benedict's test (-) formed 5 mins. conc. HNO3: rhombic crystals Osazone test: broad, flat crystals, Fehling's test: (+) Seliwanoff's test:(+) Bial's-Orcinol test: (-) TLC Profile Osazone test: needle- formed 15 mins. like crystals, formed 2 mins. Fehling's test: (+) rib gal glc fru man xyl
II. Analysis. Given below is a schematic diagram for a simple analysis of a novel tetrasaccharide isolated from a new species of red algae. Analyze each step and the accompanied results of tests, and answer the succeeding questions: A H B H c H 0 a1,4-endoglycosidase treatment A B C Benedict's test: (+) Seliwanoff's test: (-) Fehling's test: (+). Seliwanoff's test: (-) Bial's-Orcinol test: (+) Bial's-Orcinol test: (-) Osazone test: needle- like crystals, 2N HCI, 100°C, 60 mins. D Benedict's test (-) formed 5 mins. conc. HNO3: rhombic crystals Osazone test: broad, flat crystals, Fehling's test: (+) Seliwanoff's test:(+) Bial's-Orcinol test: (-) TLC Profile Osazone test: needle- formed 15 mins. like crystals, formed 2 mins. Fehling's test: (+) rib gal glc fru man xyl
Organic Chemistry
8th Edition
ISBN:9781305580350
Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Chapter24: Catalytic Carbon-carbon Bond Formation
Section: Chapter Questions
Problem 24.38P
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Transcribed Image Text:II. Analysis. Given below is a schematic diagram for a simple analysis of a
novel tetrasaccharide isolated from a new species of red algae. Analyze
each step and the accompanied results of tests, and answer the succeeding
questions:
A H B H c H 0
a1,4-endoglycosidase treatment
B
Benedict's test: (+)
Seliwanoff's test: (-)
Fehling's test: (+)
Seliwanoff's test: (-)
Bial's-Orcinol test: (+) Bial's-Orcinol test: (-)
Osazone test: needle-
like crystals,
2N HCI, 100°C,
60 mins.
formed 5 mins.
D | Benedict's test (-)
conc. HNO3: rhombic
crystals
Osazone test: broad,
flat crystals,
formed 15 mins.
Fehling's test: (+)
Seliwanoff's test: (+)
Bial's-Orcinol test: (-)
Osazone test: needle-
like crystals,
formed 2 mins.
TLC Profile
Fehling's test: (+)
++
rib
gal
glc
fru man xyl
Give the identity of the monosaccharide components of the tetrasaccharide:
A:
B:
С:
D:
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