41. Okamoto Y, Kawashima M, Hatada K (1986) Controlled chiral recognition of cellulose
triphenylcarbamate derivatives supported on silica gel. J Chromatogr 363:173–186
42. Okamoto Y, Kaida Y (1994) Resolution by high-performance liquid chromatography using
polysaccharide carbamates and benzoates as chiral stationary phases. J Chromatogr A
666:403–419
43. Yashima E, Okamoto Y (1995) Chiral discrimination on polysaccharide derivatives. Bull
Chem Soc Jpn 68:3289–3307
44. Okamoto Y, Yashima E (1998) Polysaccharide derivatives for chromatographic separation of
enantiomers. Angew Chem Int Ed 37:1020–1043
45. Yashima E, Yamamoto C, Okamoto Y (1998) Polysaccharide-based chiral LC columns.
Synlett 4:344–360
46. Okamoto Y, Aburatani R, Kaida Y, Hatada K (1988) Direct optical resolution of carboxylic
acids by chiral HPLC on tris(3,5-dimethylphenylcarbamate)s of cellulose and amylose. Chem
Lett 17:1125–1128
47. Okamoto Y, Kawashima M, Aburatani R, Hatada K, Nishiyama T, Masuda M (1986) Optical
resolution of β-blockers by HPLC on cellulose triphenylcarbamate derivatives. Chem Lett
15:1237–1240
48. Okamoto Y, Aburatani R, Fukumoto T, Hatada K (1987) Useful chiral stationary phases for
HPLC. Amylose tris(3,5-dimethylphenylcarbamate) and tris(3,5- dichlorophenylcarbamate)
supported on silica gel. Chem Lett 16:1857–1860
49. Chankvetadze B, Yashima E, Okamoto Y (1995) Dimethyl-, dichloro- and chloromethylphenylcarbamates of amylose as chiral stationary phases for HPLC. J Chromatogr A 694:101–109
50. Kubota T, Yamamoto C, Okamoto Y (2000) Tris(cyclohexylcarbamate)s of cellulose and
amylose as potential chiral stationary phases for high-performance liquid chromatography and
thin-layer chromatography. J Am Chem Soc 122:4056–4059
51. Kaida Y, Okamoto Y (1993) Optical resolution on regioselectively carbamoylated cellulose
and amylose with 3,5-dimethylphenyl and 3,5-dichlorophenyl isocyanates. Bull Chem Soc Jpn
66:2225–2232
52. Kondo S, Yamamoto C, Kamigaito M, Okamoto Y (2008) Synthesis and chiral recognition of
novel regioselectively substituted amylose derivatives. Chem Lett 37:558–559
53. Shen J, Liua S, Li P, Shen X, Okamoto Y (2012) Controlled synthesis and chiral recognition of
immobilized cellulose and amylose tris(cyclohexylcarbamate)s/3-(triethoxysilyl)propylcarbamates
as chiral packing materials for high-performance liquid chromatography. J Chromatogr A
1246:137–144
54. Kaida Y, Okamoto Y (1993) Optical resolution by high-performance liquid chromatography
on benzylcarbamates of cellulose and amylose. J Chromatogr 641:267–278
55. Yamamoto C, Yashima E, Okamoto Y (1999) Computational studies on chiral discrimination
mechanism of phenylcarbamate derivatives of cellulose. Bull Chem Soc Jpn 72:1815–1825
56. Yamamoto C, Yashima E, Okamoto Y (2002) Structural analysis of amylose tris(3,5-dimethylphenylcarbamate) by NMR relevant to its chiral recognition mechanism in
HPLC. J Am Chem Soc 124:12583–12589
57. Yashima E, Yamada M, Okamoto Y (1994) An NMR study of chiral recognition relevant to the
liquid chromatographic separation of enantiomers by a cellulose derivative. Chem Lett
23:579–582
58. Yashima E, Yamamoto C, Okamoto Y (1996) NMR studies of chiral discrimination relevant to
the liquid chromatographic enantioseparation by a cellulose phenylcarbamate derivative. J Am
Chem Soc 118:4036–4048
59. Ikai T, Okamoto Y (2010) Preparation and chiral recognition of polysaccharide-based
selectors. In: Berthod A (ed) Chiral recognition in separation methods, mechanism and
applications. Springer, Berlin Heidelberg, pp 33–52
60. Okamoto Y, Noguchi J, Yashima E (1998) Enantioseparation on 3,5-dichloro- and
3,5-dimethylphenylcarbamates of polysaccharides as chiral stationary phases for highperformance liquid chromatography. React Funct Polym 37:183–188
Helical Polymers for Efficient Enantiomer Separation
413
triphenylcarbamate derivatives supported on silica gel. J Chromatogr 363:173–186
42. Okamoto Y, Kaida Y (1994) Resolution by high-performance liquid chromatography using
polysaccharide carbamates and benzoates as chiral stationary phases. J Chromatogr A
666:403–419
43. Yashima E, Okamoto Y (1995) Chiral discrimination on polysaccharide derivatives. Bull
Chem Soc Jpn 68:3289–3307
44. Okamoto Y, Yashima E (1998) Polysaccharide derivatives for chromatographic separation of
enantiomers. Angew Chem Int Ed 37:1020–1043
45. Yashima E, Yamamoto C, Okamoto Y (1998) Polysaccharide-based chiral LC columns.
Synlett 4:344–360
46. Okamoto Y, Aburatani R, Kaida Y, Hatada K (1988) Direct optical resolution of carboxylic
acids by chiral HPLC on tris(3,5-dimethylphenylcarbamate)s of cellulose and amylose. Chem
Lett 17:1125–1128
47. Okamoto Y, Kawashima M, Aburatani R, Hatada K, Nishiyama T, Masuda M (1986) Optical
resolution of β-blockers by HPLC on cellulose triphenylcarbamate derivatives. Chem Lett
15:1237–1240
48. Okamoto Y, Aburatani R, Fukumoto T, Hatada K (1987) Useful chiral stationary phases for
HPLC. Amylose tris(3,5-dimethylphenylcarbamate) and tris(3,5- dichlorophenylcarbamate)
supported on silica gel. Chem Lett 16:1857–1860
49. Chankvetadze B, Yashima E, Okamoto Y (1995) Dimethyl-, dichloro- and chloromethylphenylcarbamates of amylose as chiral stationary phases for HPLC. J Chromatogr A 694:101–109
50. Kubota T, Yamamoto C, Okamoto Y (2000) Tris(cyclohexylcarbamate)s of cellulose and
amylose as potential chiral stationary phases for high-performance liquid chromatography and
thin-layer chromatography. J Am Chem Soc 122:4056–4059
51. Kaida Y, Okamoto Y (1993) Optical resolution on regioselectively carbamoylated cellulose
and amylose with 3,5-dimethylphenyl and 3,5-dichlorophenyl isocyanates. Bull Chem Soc Jpn
66:2225–2232
52. Kondo S, Yamamoto C, Kamigaito M, Okamoto Y (2008) Synthesis and chiral recognition of
novel regioselectively substituted amylose derivatives. Chem Lett 37:558–559
53. Shen J, Liua S, Li P, Shen X, Okamoto Y (2012) Controlled synthesis and chiral recognition of
immobilized cellulose and amylose tris(cyclohexylcarbamate)s/3-(triethoxysilyl)propylcarbamates
as chiral packing materials for high-performance liquid chromatography. J Chromatogr A
1246:137–144
54. Kaida Y, Okamoto Y (1993) Optical resolution by high-performance liquid chromatography
on benzylcarbamates of cellulose and amylose. J Chromatogr 641:267–278
55. Yamamoto C, Yashima E, Okamoto Y (1999) Computational studies on chiral discrimination
mechanism of phenylcarbamate derivatives of cellulose. Bull Chem Soc Jpn 72:1815–1825
56. Yamamoto C, Yashima E, Okamoto Y (2002) Structural analysis of amylose tris(3,5-dimethylphenylcarbamate) by NMR relevant to its chiral recognition mechanism in
HPLC. J Am Chem Soc 124:12583–12589
57. Yashima E, Yamada M, Okamoto Y (1994) An NMR study of chiral recognition relevant to the
liquid chromatographic separation of enantiomers by a cellulose derivative. Chem Lett
23:579–582
58. Yashima E, Yamamoto C, Okamoto Y (1996) NMR studies of chiral discrimination relevant to
the liquid chromatographic enantioseparation by a cellulose phenylcarbamate derivative. J Am
Chem Soc 118:4036–4048
59. Ikai T, Okamoto Y (2010) Preparation and chiral recognition of polysaccharide-based
selectors. In: Berthod A (ed) Chiral recognition in separation methods, mechanism and
applications. Springer, Berlin Heidelberg, pp 33–52
60. Okamoto Y, Noguchi J, Yashima E (1998) Enantioseparation on 3,5-dichloro- and
3,5-dimethylphenylcarbamates of polysaccharides as chiral stationary phases for highperformance liquid chromatography. React Funct Polym 37:183–188
Helical Polymers for Efficient Enantiomer Separation
413