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D. J. BELL
2. 6-O-Acetyl-O-glucose
A cobalamine-producing strain of Bacillus megatherium
(NCIB
8508) has been found to elaborate this glucose ester, which accumulates
in the culture medium. Of fourteen strains of the microorganism which
were examined, only three yielded detectable amounts of 6-O-acetyl-Dglucose (173). Although this article is not concerned with metabolic
processes it is worth recording that experiments have been done on the
effect of 6-O-acetyl-D-glucose on the reducing sugar level of the blood
of the alligator (174).
3. 6-O-Benzoyl-O-glucose
This substance, known as vaccinin, is found in the juice of blueberries (175) (Vaccinium visitidaea L.). 6-O-Benzoyl-D-glucose also
occurs in combination with salicyl alcohol as a phenolic glycoside, populin (176), in members of the poplar (Populus) family.
4. Dibenzoylglucosylxylose
This substance was isolated from Daviesia latifolia (148); its structure has not been established.
A number of natural carboxylic acid glycosidic derivatives of monosaccharides have been found. In these substances the acid radical plays
the part of the aglycone.
5. β-Ό-Glucuronosidyl benzoate (177)
One pathway by which aromatic acids are eliminated from the vertebrate body involves "conjugation" with D-glucuronic acid through
glycoside formation. It is not known how far down the evolutionary
scale this kind of reaction may be found. At present, compounds of
this type appear to be confined to mammals and birds (177a).
6. β-Ώ-Glucosyl Benzoate (178) and β-Ό-Glucosyl Galloate (179)
The glucose analog of the substance mentioned above has recently
been isolated from the laterocervical organs of V eriplaneta americana
L. and Blatta orientalis L. This animal product is comparable with the
galloate (2,4,6-trihydroxy benzoate) glucogallin found in Chinese rhubarb. The biological role of these substances is unknown.
7. 3-O-Carbamoylnoviose (45)
The antibiotic novobiocin contains units derived from the 3-0carbamate (LXXXVIII) of noviose (Section I,E):
D. J. BELL
2. 6-O-Acetyl-O-glucose
A cobalamine-producing strain of Bacillus megatherium
(NCIB
8508) has been found to elaborate this glucose ester, which accumulates
in the culture medium. Of fourteen strains of the microorganism which
were examined, only three yielded detectable amounts of 6-O-acetyl-Dglucose (173). Although this article is not concerned with metabolic
processes it is worth recording that experiments have been done on the
effect of 6-O-acetyl-D-glucose on the reducing sugar level of the blood
of the alligator (174).
3. 6-O-Benzoyl-O-glucose
This substance, known as vaccinin, is found in the juice of blueberries (175) (Vaccinium visitidaea L.). 6-O-Benzoyl-D-glucose also
occurs in combination with salicyl alcohol as a phenolic glycoside, populin (176), in members of the poplar (Populus) family.
4. Dibenzoylglucosylxylose
This substance was isolated from Daviesia latifolia (148); its structure has not been established.
A number of natural carboxylic acid glycosidic derivatives of monosaccharides have been found. In these substances the acid radical plays
the part of the aglycone.
5. β-Ό-Glucuronosidyl benzoate (177)
One pathway by which aromatic acids are eliminated from the vertebrate body involves "conjugation" with D-glucuronic acid through
glycoside formation. It is not known how far down the evolutionary
scale this kind of reaction may be found. At present, compounds of
this type appear to be confined to mammals and birds (177a).
6. β-Ώ-Glucosyl Benzoate (178) and β-Ό-Glucosyl Galloate (179)
The glucose analog of the substance mentioned above has recently
been isolated from the laterocervical organs of V eriplaneta americana
L. and Blatta orientalis L. This animal product is comparable with the
galloate (2,4,6-trihydroxy benzoate) glucogallin found in Chinese rhubarb. The biological role of these substances is unknown.
7. 3-O-Carbamoylnoviose (45)
The antibiotic novobiocin contains units derived from the 3-0carbamate (LXXXVIII) of noviose (Section I,E):