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char = t;code = 116
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char = t;code = 116
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char = o;code = 111
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char = t;code = 116
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char = e;code = 101
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char = e;code = 101
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char = f;code = 102
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char = g;code = 103
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char = e;code = 101
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char = u;code = 117
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result sql = Antiprotozoal activities of heterocyclic-substituted xanthones from the marine-derived fungus Chaetomium sp.
Antiprotozoal activities of heterocyclic-substituted xanthones from the marine-derived fungus Chaetomium sp.
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char = e;code = 101
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char = );code = 41
char = .;code = 46
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char = o;code = 111
char = m;code = 109
char = p;code = 112
char = o;code = 111
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char = d;code = 100
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char = 1;code = 49
char = ;code = 32
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char = d;code = 100
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char = ;code = 32
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char = s;code = 115
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char = u;code = 117
char = t;code = 116
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char = a;code = 97
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char = y;code = 121
char = d;code = 100
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char = o;code = 111
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char = r;code = 114
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = m;code = 109
char = o;code = 111
char = i;code = 105
char = e;code = 101
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char = y;code = 121
char = ;code = 32
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char = r;code = 114
char = e;code = 101
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char = y;code = 121
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char = o;code = 111
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char = d;code = 100
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char = i;code = 105
char = n;code = 110
char = ;code = 32
char = n;code = 110
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char = t;code = 116
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char = r;code = 114
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = d;code = 100
char = u;code = 117
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char = p;code = 112
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char = n;code = 110
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char = a;code = 97
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char = d;code = 100
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char = f;code = 102
char = i;code = 105
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = a;code = 97
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char = ;code = 32
char = a;code = 97
char = ;code = 32
char = c;code = 99
char = h;code = 104
char = l;code = 108
char = o;code = 111
char = r;code = 114
char = i;code = 105
char = n;code = 110
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = x;code = 120
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = h;code = 104
char = o;code = 111
char = n;code = 110
char = e;code = 101
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char = s;code = 115
char = u;code = 117
char = b;code = 98
char = s;code = 115
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char = i;code = 105
char = t;code = 116
char = u;code = 117
char = t;code = 116
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char = d;code = 100
char = ;code = 32
char = w;code = 119
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char = t;code = 116
char = h;code = 104
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = t;code = 116
char = e;code = 101
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = h;code = 104
char = y;code = 121
char = d;code = 100
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = y;code = 121
char = r;code = 114
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = r;code = 114
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = f;code = 102
char = i;code = 105
char = g;code = 103
char = u;code = 117
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = a;code = 97
char = l;code = 108
char = y;code = 121
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char = i;code = 105
char = s;code = 115
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char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
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char = e;code = 101
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char = o;code = 111
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char = p;code = 112
char = o;code = 111
char = u;code = 117
char = n;code = 110
char = d;code = 100
char = s;code = 115
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char = e;code = 101
char = m;code = 109
char = p;code = 112
char = l;code = 108
char = o;code = 111
char = y;code = 121
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = C;code = 67
char = D;code = 68
char = ;code = 32
char = s;code = 115
char = p;code = 112
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = s;code = 115
char = c;code = 99
char = o;code = 111
char = p;code = 112
char = y;code = 121
char = ,;code = 44
char = ;code = 32
char = m;code = 109
char = o;code = 111
char = d;code = 100
char = i;code = 105
char = f;code = 102
char = i;code = 105
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = M;code = 77
char = o;code = 111
char = s;code = 115
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = ';code = 39
char = s;code = 115
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = t;code = 116
char = h;code = 104
char = o;code = 111
char = d;code = 100
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = N;code = 78
char = O;code = 79
char = E;code = 69
char = ;code = 32
char = g;code = 103
char = r;code = 114
char = a;code = 97
char = d;code = 100
char = i;code = 105
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = C;code = 67
char = o;code = 111
char = m;code = 109
char = p;code = 112
char = o;code = 111
char = u;code = 117
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = 2;code = 50
char = ;code = 32
char = s;code = 115
char = h;code = 104
char = o;code = 111
char = w;code = 119
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = ;code = 32
char = a;code = 97
char = g;code = 103
char = a;code = 97
char = i;code = 105
char = n;code = 110
char = s;code = 115
char = t;code = 116
char = ;code = 32
char = P;code = 80
char = l;code = 108
char = a;code = 97
char = s;code = 115
char = m;code = 109
char = o;code = 111
char = d;code = 100
char = i;code = 105
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = f;code = 102
char = a;code = 97
char = l;code = 108
char = c;code = 99
char = i;code = 105
char = p;code = 112
char = a;code = 97
char = r;code = 114
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = I;code = 73
char = C;code = 67
char = 5;code = 53
char = 0;code = 48
char = ;code = 32
char = v;code = 118
char = a;code = 97
char = l;code = 108
char = u;code = 117
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = 0;code = 48
char = .;code = 46
char = 5;code = 53
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = r;code = 114
char = o;code = 111
char = g;code = 103
char = /;code = 47
char = m;code = 109
char = L;code = 76
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = o;code = 111
char = u;code = 117
char = t;code = 116
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = c;code = 99
char = y;code = 121
char = t;code = 116
char = o;code = 111
char = t;code = 116
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = w;code = 119
char = a;code = 97
char = r;code = 114
char = d;code = 100
char = ;code = 32
char = c;code = 99
char = u;code = 117
char = l;code = 108
char = t;code = 116
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = e;code = 101
char = u;code = 117
char = k;code = 107
char = a;code = 97
char = r;code = 114
char = y;code = 121
char = o;code = 111
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = c;code = 99
char = e;code = 101
char = l;code = 108
char = l;code = 108
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = C;code = 67
char = o;code = 111
char = m;code = 109
char = p;code = 112
char = o;code = 111
char = u;code = 117
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = 3;code = 51
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = s;code = 115
char = p;code = 112
char = l;code = 108
char = a;code = 97
char = y;code = 121
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = m;code = 109
char = o;code = 111
char = d;code = 100
char = e;code = 101
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = ;code = 32
char = a;code = 97
char = g;code = 103
char = a;code = 97
char = i;code = 105
char = n;code = 110
char = s;code = 115
char = t;code = 116
char = ;code = 32
char = T;code = 84
char = r;code = 114
char = y;code = 121
char = p;code = 112
char = a;code = 97
char = n;code = 110
char = o;code = 111
char = s;code = 115
char = o;code = 111
char = m;code = 109
char = a;code = 97
char = ;code = 32
char = c;code = 99
char = r;code = 114
char = u;code = 117
char = z;code = 122
char = i;code = 105
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = I;code = 73
char = C;code = 67
char = 5;code = 53
char = 0;code = 48
char = ;code = 32
char = v;code = 118
char = a;code = 97
char = l;code = 108
char = u;code = 117
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = 1;code = 49
char = .;code = 46
char = 5;code = 53
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = r;code = 114
char = o;code = 111
char = g;code = 103
char = /;code = 47
char = m;code = 109
char = L;code = 76
char = .;code = 46
char = <;code = 60
char = b;code = 98
char = r;code = 114
char = /;code = 47
char = >;code = 62
result sql = Investigations of the marine-derived fungus Chaetomium sp. led to the isolation of the new natural products chaetoxanthones A, B, and C (1-3). Compounds 1 and 2 are substituted with a dioxane/tetrahydropyran moiety rarely found in natural products. Compound 3 was identified as a chlorinated xanthone substituted with a tetrahydropyran ring. The configurational analysis of these compounds employed CD spectroscopy, modified Mosher's method, and selective NOE gradient measurements. Compound 2 showed selective activity against Plasmodium falciparum with an IC50 value of 0.5 microg/mL without being cytotoxic toward cultured eukaryotic cells. Compound 3 displayed a moderate activity against Trypanosoma cruzi with an IC50 value of 1.5 microg/mL.

Publication: J. Nat. Prod. 2008 Sep ;71(9)::1579-84. :doi: 10.1021/np800294q.
Publication Date: 2008 Sep
Study Author(s): Pontius, Alexander;Krick, Anja;Kehraus, Stefan;Brun, Reto;König, Gabriele M;
Institution: Institute for Pharmaceutical Biology, University of Bonn, Nussallee 6, 53115 Bonn, Germany.
Shortcut link to this study:
Investigations of the marine-derived fungus Chaetomium sp. led to the isolation of the new natural products chaetoxanthones A, B, and C (1-3). Compounds 1 and 2 are substituted with a dioxane/tetrahydropyran moiety rarely found in natural products. Compound 3 was identified as a chlorinated xanthone substituted with a tetrahydropyran ring. The configurational analysis of these compounds employed CD spectroscopy, modified Mosher's method, and selective NOE gradient measurements. Compound 2 showed selective activity against Plasmodium falciparum with an IC50 value of 0.5 microg/mL without being cytotoxic toward cultured eukaryotic cells. Compound 3 displayed a moderate activity against Trypanosoma cruzi with an IC50 value of 1.5 microg/mL.
PMID: 18683985

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