Title: D-Chalcose
CAS Registry Number: 3150-28-5
CAS Name: 4,6-Dideoxy-3-O-methyl-D-xylo-hexose
Additional Names: 4,6-dideoxy-3-O-methyl-D-glucose; lankavose
Molecular Formula: C7H14O4
Molecular Weight: 162.18
Percent Composition: C 51.84%, H 8.70%, O 39.46%
Literature References: Component of chalcomycin and lankamycin, q.q.v. Prepn from chalcomycin and structure: Woo et al., J. Am. Chem. Soc. 83, 3352 (1961). Stereochemistry: Woo et al., ibid. 84, 1066 (1962); Foster et al., J. Chem. Soc. 1965, 2318. Synthesis: Kochetkov, Usov, Tetrahedron Lett. 1963, 519; McNally, Overend, Chem. Ind. (London) 1964, 2021; Lawton et al., Can. J. Chem. 47, 2899 (1969). Synthesis of DL-form: R. M. Srivastava, R. K. Brown, Can. J. Chem. 48, 830 (1970); K.Torssell, M. P. Tyagi, Acta Chem. Scand. B 31, 1 (1977); S. Danishefsky, J. F. Kerwin, J. Org. Chem. 47, 1597 (1982).
Properties: Crystals, mp 96-99°. [a]D24 +120° (2 min) ® +97° (10 min) ® +76° (3 hr and 26 hr) (c = 1.5 in water).
Melting point: mp 96-99°
Optical Rotation: [a]D24 +120° (2 min) ® +97° (10 min) ® +76° (3 hr and 26 hr) (c = 1.5 in water)
Derivative Type: Methyl chalcoside
Molecular Formula: C8H16O4
Molecular Weight: 176.21
Percent Composition: C 54.53%, H 9.15%, O 36.32%
Properties: Crystals, mp 101.5-102°. [a]D27 -21° (c = 2.04 in chloroform).
Melting point: mp 101.5-102°
Optical Rotation: [a]D27 -21° (c = 2.04 in chloroform)
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