JP5892750B2 - N−アセチルグルコサミンがαで結合した糖誘導体の調製方法 - Google Patents
N−アセチルグルコサミンがαで結合した糖誘導体の調製方法 Download PDFInfo
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[1] N−アセチルグルコサミン誘導体と、そのアノマー位にグリコシド結合しうる糖受容体とを糖加水分解酵素により反応させて、N−アセチルグルコサミンがαグリコシド結合した糖誘導体を選択的に調製する方法。
[2] N−アセチルグルコサミン誘導体が、(化1)の式で表されるGlcNAc−α−DMTまたはその誘導体である[1]に記載の方法。
[3] 糖加水分解酵素が、グリコシルハイドロラーゼファミリー89(GH89)に属するα−N−アセチルグルコサミニダーゼである[1]に記載の調製方法。
[4] 糖加水分解酵素が、バクテロイデス セタイオタオミクロン(Bacteroides thetaiotaomicron VPI5482)由来のα−N−アセチルグルコサミニダーゼ1、2または3である[1]に記載の調製方法。
[5] そのアノマー位にグリコシド結合しうる糖受容体が、アルコール類、ガラクトース誘導体、またはガラクトースを含む糖の誘導体である[1]に記載の調製方法。
溶液は、リン酸緩衝液、炭酸緩衝液などの例を挙げることができ、特にリン酸緩衝化生理食塩水(phosphate buffered saline,PBS)が好ましい。
溶液のpHは、中性付近が好ましく、pH6.0からpH8.0が特に好ましい。
反応の温度は、25℃から45℃が好ましく、32℃が特に好ましい。
反応の時間は、酵素濃度が数十から数百nMで数時間から24時間が好ましく、さらに酵素濃度800nMとした場合に、4から5時間程度が特に好ましい。しかしながら、酵素濃度が数十nM以下においては、反応時間が24時間以上で、比較的高い糖転移収率を得ることがある。
本発明で調製される糖誘導体には、糖鎖、糖蛋白質、糖脂質などが含まれる。
N−アセチル−D−グルコサミン(GlcNAc)221mg(1.0mmol)を水6.25mlに溶解し、塩化4−(4,6−ジメトキシ−1,3,5−トリアジン−2−イル)−4−メチルモルホリニウム(DMT−MM))553mg(2.0mmol)、次いで2,6−ルチジン0.23ml(2.0mmol)を室温で加え、反応溶液を室温で24時間撹拌した。(化2)式の反応が進行した。薄層クロマトグラフィー(TLC)で反応終了を確認後、減圧下溶媒を除去し、シリカゲルフラッシュカラムクロマトグラフィ(展開溶媒:酢酸エチル/メタノール=7/1)により精製して、4,6−ジメトキシ−1,3,5−トリアジン−2−イル2−アセタミド−2−デオキシ−α−D−グルコピラノシド(GlcNAc−α−DMT)288mg(0.80mmol、80%)を得た。
ベンジル 6−O−(2−アセタミド−2−デオキシ−α−D−グルコピラノシル)−β−D−ガラクトピラノシド (GlcNAc−α1→6−Gal−β−OBn)
1H NMR(500 MHz, CD3OD) : δ 7.47−7.30(5H, m, Ph), 4.95(1H, d, −CH 2−, J = 12.0 Hz) , (1H, d, H−1’), 4.68(1H, d, −CH 2−, J = 11.8 Hz), 4.38(1H, d, H−1, J = 7.6 Hz), 2.03(3H, s, −COCH 3).
DEPT−135 NMR (126 MHz, CD3OD): δ 128.0−127.3(Ph), 102.6(C−1), 97.3(C−1’), 70.4(−CH2−), 66.4(C−6), 61.3(C−6’), 21.3(−COCH3).
MALDI−TOF MS ; m/z calcd for C21H31NO11[M+Na]+ : 496.5, Found : 496.8
1H NMR(500 MHz, CD3OD) : δ 7.47−7.29(5H, m, Ph), 5.32(1H, d, H−1’, J = 3.7 Hz), 5.03(1H, d, −CH 2−, J = 11.4 Hz), 4.63(1H, d, −CH 2−, J = 11.4 Hz), 4.60(1H, d, H−1, J = 7.8 Hz), 4.15(1H, ddd, H−5’, J = 2.1, 5.2, 10.1 Hz), 4.0(1H, dd, H−2’, J = 3.6, 10.7 Hz), 3.89−3.71(7H, m, H−2, H−4, H−6a, H−6b, H−3’, H−6’a, H−6’b), 3.64−3.53(2H, m, H−3, H−5), 3.42(1H, t, H−4’, J = 9.5 Hz), 1.83(3H, s, −COCH 3).
DEPT−135 NMR (126 MHz, CD3OD): δ 128.1−127.3(Ph), 102.8(C−1), 97.5(C−1’), 76.2(C−2), 75.4(C−5), 72.5(C−3), 72.2(C−5’), 71.7(C−3’), 70.9(C−4’), 70.6(−CH2−), 69.3(C−4), 61.3(C−6’), 61.1(C−6), 53.8(C−2’), 21.3(−COCH3).
MALDI−TOF MS ; m/z calcd for C21H31NO11[M+Na]+ : 496.5, Found : 496.6
p−メトキシフェニル−4−O−2−アセトアミド−2−デオキシ−α−D−グルコピラノシル−β−D−ガラクトピラノシド
1H NMR(500 MHz, CD3OD) : δ 7.08(2H, d, Ph, J = 9.1 Hz), 6.86(2H, d, Ph, J = 9.1 Hz), 4.95(1H, d, H−1’, J = 3.6 Hz), 4.84(1H, d, H−1, J = 7.6 Hz), 4.29(1H, ddd, H−5’, J = 2.5, 4.0, 9.9 Hz), 4.04(1H, d, H−4, J = 2.8 Hz), 3.97(1H, dd, H−2’, J = 3.6, 10.9 Hz), 3.83(1H, dd, H−6a’, J = 2.2, 11.8 Hz), 3.79−3.71(8H, m, H−2, H−5, H−6a, H−3’, H−6’b, −OCH 3), 3.69−3.65(2H, m, H−3, H−6b), 3.46(1H, t, H−4’, J = 9.4, 9.5 Hz), 2.02(3H, s, −COCH 3).
13C NMR(126 MHz, CD3OD): δ 173.8(−COCH3), 156.7, 153.0, 119.1, and 115.5(Ph), 104.0(C−1), 100.3(C−1’), 77.7(C−4), 76.8(C−5), 74.3(C−3), 73.7(C−5’), 72.6(C−3’), 72.4(C−2), 72.0(C−4’), 62.3(C−6’), 60.7(C−6), 56.1(−OCH3), 55.5(C−2’), 22.7(−COCH3).
メトキシ−4−O−2−アセトアミド−2−デオキシ−α−D−グルコピラノシル−β−D−ガラクトピラノシド
1H NMR (500 MHz, CD3OD) : δ 4.88(1H, d, H−1’, J = 3.7 Hz), 4.24(1H, ddd, H−5’, J = 2.5 Hz, 4.4 Hz, 10.2 Hz), 4.21(1H, d, H−1, J = 7.4 Hz), 3.97(1H, d, H−4, J = 3.0 Hz), 3.94(1H, dd, H−2’, J = 3.7 Hz, 10.8 Hz), 3.79(1H, dd, H−6’a, J = 2.6 Hz, 11.8 Hz), 3.74−3.58(5H, m, H−6’b, H−6a, H−3’, H−6b, H−5), 3.58(3H, s, −OCH 3), 3.55(1H, dd, H−3, J = 3.0 Hz, 10.1 Hz), 3.50(1H, dd, H−2, J = 7.5 Hz, 10.1 Hz),3.43(1H, dd, H−4’, J = 9.0 Hz, 10.1 Hz), 2.03(3H, s, −COCH 3).
13C NMR (126 MHz, CD3OD) : δ 173.7(−COCH3), 106.3(C−1), 100.3(C−1’), 77.6(C−4), 76.7(C−5), 74.4(C−3), 73.6(C−5’), 72.7(C−3’), 72.6(C−2), 72.0(C−4’), 62.3(C−6’), 60.8(C−6), 57.8(−OCH3), 55.5(C−2’), 22.7(−COCH3)
2−ピリジル−1−チオ−2−アセトアミド−2−デオキシ−4−O−(4−O−アセトアミド−2−デオキシ−α−D−グルコピラノシル)−β−D−ガラクトピラノシル)−β−D−グルコピラノシド
1H NMR (400 MHz, CD3OD): δ 8.38, 7.68, 7,40, and 7.16(4H, Pyridyl), 5.45(1H, d, H−1, J = 10.7 Hz), 4.90(1H, d, H−1”, J = 3.7 Hz), 4.48(1H, d, H−1’, J = 7.4 Hz), 4.20(1H, ddd, H−5” , J = 2.4, 4.6, 7.8 Hz), 3.99(1H, dd, H−2, J = 9.6, 10.5 Hz), 3.95(1H, d, H−4’, J = 2.2 Hz), 3.93−3.89(3H, m, H−6a, H−6b, H−2”), 3.81(1H, dd, H−6”a, J = 2.5, 11.9 Hz), 3.78−3.54(10H, m, H−3, H−4, H−5, H−2’, H−3’, H−5’, H−6’a, H−6’b, H−3”, H−6”b), 3.42(1H, dd, H−4”, J = 8.9, 10.1 Hz), 2.01(3H, s, −COCH 3), 1.95(3H, s, −COCH 3).
13C NMR (101 MHz, CD3OD): δ 173.7 and 173.5(−COCH3), 158.9, 150.3, 138.5, 124.4, and 122.0(Pyridyl), 105.4(C−1’), 100.1(C−1”), 84.8(C−1), 80.9(C−5), 80.6(C−4), 78.1(C−4’), 77.2(C−5’), 75.7(C−3), 74.5(C−3’), 73.8(C−5”), 72.5(C−2’, C−3”), 72.1(C−4”), 62.4(C−6”), 61.8(C−6), 61.3(C−6’), 55.6(C−2”), 55.5(C−2), 22.9 and 22.7(−COCH3).
2−ピリジル−1−チオ−4−O−(4−O−(2−アセトアミド−2−デオキシ−α−D−グルコピラノシル)−β−D−ガラクトピラノシル)−β−D−グルコピラノシド
1H NMR (500 MHz, CD3OD): δ 8.42, 7.73, 7,49, and 7.21(4H, Pyridyl), 5.29(1H, d, H−1, J = 10.7 Hz), 4.93(1H, d, H−1”, J = 3.7 Hz), 4.49(1H, d, H−1’, J = 7.4 Hz), 4.24(1H, m, H−5”), 3.98(1H, d, H−4, J = 1.9 Hz), 3.94(1H, dd, H−2”, J = 3.4, 11.2 Hz), 3.92(2H, d, H−6a, H−6b, J = 2.7 Hz), 3.84(1H, dd, H−6”a, J = 1.9, 11.8 Hz), 3.77−3.59(10H, m, H−3, H−4, H−5, H−2’, H−3’, H−5’, H−6’a, H−6’b, H−3”, H−6”b), 3.49−3.44(2H, m, H−2, H−4”), 2.05(3H, s, −COCH 3).
13C NMR (126 MHz, CD3OD): δ 172.4(−COCH3), 157.8, 148.9, 137.3, 123.2, and 120.7(Pyridyl), 104.0(C−1’), 98.6(C−1”), 84.6(C−1), 79.3(C−5), 78.7(C−4), 76.8(C−3), 76.6(C−4’), 75.8(C−5’), 73.1(C−3’), 72.3(C−2, C−5”), 71.1(C−2’, C−3”), 70.1(C−4”), 61.0(C−6”), 60.4(C−6), 59.9(C−6’), 54.3(C−2”), 21.3(−COCH3).
FAB−MS ; m/z calcd for C25H38N2O15S[M+H]+ : 639.2071, Found : 639.2075
4,6ジメトキシ−1,3,5−トリアジン−2−イル2−アセトアミド−2−デオキシ−3−O−(4−O−(2−アセトアミド−2デオキシα−D−グルコピラノシル)−β−D−ガラクトピラノシル)−β−D−ガラクトピラノシド
1H NMR (400 MHz, CD3OD): δ 6.63(1H, d, H−1, J = 3.72 Hz), 4.93(1H, d, H−1”, J = 3.7 Hz), 4.66(1H, dd, H−2, J = 3.7, 11.3 Hz), 4.56(1H, d, H−1’, J = 7.1 Hz), 4.27(1H, d, H−4, J = 2.1 Hz), 4.20−4.16(2H, m, H−3, H−5”), 4.02−4.00(7H, m, −OCH 3, H−5), 3.97(1H, d, H−4’, J = 2.8 Hz), 3.94(1H, dd, H−2”, J = 3.7, 10.9 Hz), 3.81(1H, d, H−6”a, J = 2.3 11.8 Hz), 3.76−3.54(9H, m, H−6a, H−6b, H−2’, H−3’, H−5’, H−6’a, H−6’b, H−3”, H−6”b), 3.42(1H, dd, H−4”, J = 8.9, 10.0 Hz), 2.02(3H, s, −COCH 3), 1.92(3H, s, −COCH 3).
13C NMR (101 MHz, CD3OD): δ 175.1, 174.3, 173.8, and 173.7(triazine, −COCH3), 106.1(C−1’), 100.1(C−1”), 96.4(C−1), 78.4(C−3), 78.1(C−4’), 76.8(C−5’), 74.8(C−5), 74.5(C−3’), 73.8(C−5”), 72.6(C−3”), 72.5(C−2’), 72.1(C−4”), 69.5(C−4), 62.5(C−6), 62.4(C−6”), 61.3(C−6’), 56.1(−OCH3), 55.6(C−2”), 49.6−48.4(C−2 in peak of CHD2OD), 22.7 and 22.6(−COCH3).
イソプロピル−1−チオ―β―4−O−2−アセトアミド−2−デオキシ−α−D−グルコピラノシル)−β−D−ガラクトピラノシド
1H NMR (500 MHz, CD3OD) : δ 4.89(1H, d, H−1’, J = 3.7 Hz), 4.51(1H, d, H−1, J = 9.6 Hz), 4.22(1H, ddd, H−5’, J = 2.5, 4.4, 10.1 Hz), 4.01(1H, d, H−4, J = 3.0 Hz), 3.95(1H, dd, H−2’, J = 3.7, 10.8 Hz), 3.79(1H, dd, H−6’a, J = 2.5, 11.8 Hz), 3.73(1H, dd, H−6’b, J = 4.5, 11.8 Hz), 3.70−3.59(4H, m, H−3’, H−5, H−6a, H−6b), 3.56(1H, dd, H−3, J = 3.0, 9.6 Hz), 3.48(1H, t, H−2, J = 9.6 Hz), 3.43(1H, dd, H−4’, J = 9.0, 10.1 Hz), 3.25(1H, sept, isopropyl, J = 6.8 Hz), 2.03(3H, s, −COCH 3) 1.34(3H, d, isopropyl, J = 6.8 Hz), 1.33(3H, d, isopropyl, J = 6.8 Hz),.
13C NMR (126 MHz, CD3OD) : δ 173.7(−COCH3), 100.53(C−1’), 87.3(C−1), 80.5(C−5), 78.3(C−4), 75.9(C−3), 73.6(C−5’), 72.7(C−3’), 72.0(C−4’), 71.7(C−2), 62.3(C−6’), 60.8(C−6), 55.5(C−2’), 36.2(isopropyl), 24.4, 24.1(isopropyl), 22.7(−COCH3).
Claims (3)
- 糖加水分解酵素が、バクテロイデス セタイオタオミクロン(Bacteroides thetaiotaomicron VPI5482)由来のα−N−アセチルグルコサミニダーゼ1、2または3である請求項1に記載の調製方法。
- そのアノマー位にグリコシド結合しうる糖受容体が、アルコール類、ガラクトース誘導体、またはガラクトースを含む糖の誘導体である請求項1に記載の調製方法。
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