JPWO2012169575A1 - 光学活性カルボン酸エステルの製造方法 - Google Patents
光学活性カルボン酸エステルの製造方法 Download PDFInfo
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- C07D207/30—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members
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Abstract
Description
本発明の製造方法で用いられる酸無水物は、脱水縮合剤として作用する。酸無水物としては、安息香酸、フェニル基にアルキル基、アルコキシ基、アミノ基、アルコキシアルキル基等の電子供与性基が結合した安息香酸、又はα位が4級炭素である多置換カルボン酸から得られるものが好ましく、安息香酸、炭素数1〜3のアルキル基又はアルコキシ基が結合した1〜3置換の安息香酸、ピバル酸、2−メチルー2−フェニルプロピオン酸、又は2,2−ジフェニルプロピオン酸から得られるものがより好ましい。
本発明の製造方法で用いられる極性溶媒は、双極子モーメントが3.0以上である。このような極性溶媒としては、アセトニトリル、N−メチルピロリドン、N,N−ジメチルホルムアミド、N,N−ジメチルアセトアミド、1,3−ジメチル−2−イミダゾリジノン、ジメチルスルホキシド等が挙げられる。双極子モーメントが3.0以上の極性溶媒を用いることによって、光学活性カルボン酸のラセミ化が起こりやすくなる。
光学活性カルボン酸エステルの製造は、極性溶媒中に、ラセミのカルボン酸、アルコール又はフェノール誘導体、酸無水物、及び不斉触媒を添加することによって行われるが、反応系内に塩基を添加することが好ましい。この塩基としては、求核性を有さない有機塩基が好ましく、トリメチルアミン、トリエチルアミン、ジイソプロピルエチルアミン等が挙げられる。極性溶媒中への添加順序は任意であるが、ラセミのカルボン酸と酸無水物とを含む溶液中に、アルコール又はフェノール誘導体、有機塩基、不斉触媒を順次加えることが好ましい。
s値は、Kaganらの方法(Top.Stereochem.,1988,vol18,p249−330)によって、以下のように算出した。
s=[ln(1−C)(1−回収アルコールのee)]/[ln(1−C)(1+回収アルコールのee)]。
変換率C(%)=[回収アルコールのee]/[(回収アルコールのee)+(生成したエステルのee)]
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=0.5mL/min):
tR=12.6min(4.7%),tR=23.1min(95.3%);
IR(neat):3036,1735,1599,1512,782,679cm−1;
1H NMR(CDCl3):δ
8.29(s,1H),
8.02−7.93(m,1H),
7.85−7.60(m,5H),
7.47−7.26(m,3H),
7.24−7.02(m,6H),
7.00−6.88(m,3H),
3.74(q,J=7.1Hz,1H),
2.38(d,J=7.1Hz,2H),
1.78(tqq,J=7.1,6.6,6.6Hz,1H),
1.43(d,J=7.1Hz,3H),
0.84(d,J=6.6Hz,6H);
13C NMR(CDCl3):δ173.7,140.6,137.2,134.9,134.7,133.8,133.7,131.2,130.9,129.3,129.1,128.8,128.7,128.6,127.5,126.7,126.34,126.25,125.8,125.6,125.2,125.0,123.5,123.4,70.9,45.3,45.0,30.2,22.4,18.1;
HR MS:calcd for C34H32O2Na(M+Na+)495.2295, found 495.2276.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane/TFA=1/100/0.1,flow rate=1.0mL/min):
tR=30.5min(86.0%),tR=34.0min(14.0%);
1H NMR(CDCl3):δ
10.30(br s,1H,COOH),
7.14(d,J=7.9Hz,2H),
7.02(d,J=7.9Hz,2H),
3.63(q,J=7.3Hz,1H),
2.37(q,J=7.3Hz,2H),
1.77(tqq,J=7.3,6.5,6.5Hz,1H),
1.42(d,J=7.3Hz,3H),
0.82(d,J=6.5Hz,6H);
13C NMR(CDCl3):δ181.0,140.8,136.9,129.4,127.3,45.0,44.9,30.2,22.4,18.1.
不斉エステル化による動的速度論的光学分割において、基質の芳香環上の置換基の効果を検討した。
N,N−ジメチルホルムアミド溶媒0.2モル中に、各種ラセミのカルボン酸1a〜iの1当量に対して、ピバル酸無水物を2.4当量、ジ(1−ナフチル)メタノールを1.2当量、ジイソプロピルエチルアミン4.8当量、(+)−ベンゾテトラミソールを5モル%加え、化学式に従って室温で48時間反応させた。反応系を0℃に冷却後、1規定塩酸を加え反応を停止した。有機層を分取後、水層を酢酸エチルで抽出した。有機層を合わせ、無水硫酸ナトリウムで乾燥した後、濾過、減圧濃縮して粗生成物を得た。生成した光学活性エステルをシリカゲル薄層クロマトグラフィにより分離し、目的物を得た。
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=0.5mL/min):
tR=14.1min(8.2%),tR=19.7min(91.8%);
IR(neat):3051,1733,1598,1512,801,777,732cm−1;
1H NMR(CDCl3):δ
8.27(s,1H),
7.98−7.91(m,1H),
7.83−7.76(m,1H),
7.72(t,J=8.2Hz,2H),
7.66(d,J=8.2Hz,1H),
7.62(d,J=8.6Hz,1H),
7.44−7.36(m,1H),
7.31(t,J=7.5Hz,1H),
7.22−7.14(m,2H),
7.13−7.01(m,4H),
6.97(d,J=7.9Hz,2H),
6.92(d,J=7.5Hz,1H),
3.72(q,J=7.0Hz,1H),
2.25(s,3H),
1.42(d,J=7.0Hz,3H);
13C NMR(CDCl3):δ173.7,137.0,136.7,134.9,134.6,133.8,133.7,131.2,130.9,129.2,129.1,128.8,128.7,128.6,128.3,127.6,126.7,126.3,126.2,125.8,125.6,125.3,125.2,125.0,123.5,123.3,71.1,45.2,21.0,18.2;
HR MS:calcd for C31H26O2Na(M+Na+)453.1825,found 453.1816.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=0.5mL/min):
tR=14.4min(4.6%),tR=18.0min(95.4%);
1H NMR(CDCl3):δ
8.40−8.36(m,1H),
8.09−8.00(m,1H),
7.92−7.82(m,1H),
7.86−7.75(m,2H),
7.73(dd,J=8.4,8.4Hz,1H),
7.54−7.34(m,3H),
7.32−7.11(m,5H),
7.09−6.98(m,4H),
3.88−3.74(m,1H),
2.22(s,3H),
1.51(dd,J=6.9,1.8Hz,3H);
13C NMR(CDCl3):δ173.6,139.9,138.2,134.8,134.5,133.8,133.6,131.2,130.8,129.1,128.8,128.7,128.6,128.4,128.3,127.9,126.7,126.33,126.27,125.8,125.6,125.3,125.2,125.0,124.8,123.5,123.3,71.0,45.5,21.3,18.2;
HR MS:calcd for C31H26O2Na(M+Na+)453.1825, found 453.1817;
Analytical data on racemic compound:Mp:120−121℃(hexane);IR(KBr):3055,2970,2931,1597,1241,1157,779,741,710cm−1.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/50,flow rate=0.5mL/min):
tR=21.6min(4.1%),tR=34.0min(94.9%);
IR(neat):3057,1599,1510,752,730cm−1;
1H NMR(CDCl3):δ
8.31(s, 1H),
8.02−7.96(m, 1H),
7.83−7.78(m, 1H),
7.73(t,J=8.0Hz,2H),
7.69−7.62(m,2H),
7.45−7.39(m,2H),
7.34−7.30(m,1H),
7.23−7.17(m,2H),
7.14−7.00(m,6H),
6.88(d,J=8.0Hz,1H),
4.00(q,J=7.0Hz,1H),
2.16(s,3H),
1.43(d,J=7.0Hz,3H);
13C NMR(CDCl3):δ173.7,138.5,135.9,134.9,134.6,133.8,133.7,131.2,130.9,130.5,129.1,128.9,128.7,128.6,127.0,126.9,126.7,126.34,126.30,126.28,125.8,125.6,125.3,125.2,125.0,123.5,123.4,71.0,41.4,19.7,17.6;
HR MS:calcd for C31H26O2Na(M+Na+)453.1825,found 453.1813.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=0.5mL/min):
tR=22.7min(6.4%),tR=28.8min(93.6%);
IR(neat):3059,1733,1608,1512,783,733cm−1;
1H NMR(CDCl3):δ
8.26(s,1H),
7.97−7.89(m,1H),
7.85−7.58(m,5H),
7.46−7.04(m,9H),
6.93(d,J=6.9Hz,1H),
6.75−6.67(m,2H),
3.78−3.68(m,4H),
1.42(d,J=6.9Hz,3H);
13C NMR(CDCl3):δ173.7,158.7,134.8,134.6,133.8,133.6,132.1,131.2,130.9,129.1,128.83,128.76,128.71,128.6,128.3,126.7,126.3,126.2,125.8,125.6,125.3,125.2,125.0,123.5,123.3,113.9,71.0,55.3,44.8,18.2;
HR MS:calcd for C31H26O2Na(M+Na+)469.1774,found 469.1754.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=0.5mL/min):
tR=21.3min(4.5%),tR=35.6min(95.5%);
IR(neat):3055,2978,1736,1597,1250,1157,779,764,702cm−1;
1H NMR(CDCl3):δ
8.36(s,1H),
8.08−7.98(m,1H),
7.92−7.84(m,1H),
7.81(d,J=7.5Hz,1H),
7.79(d,J=8.1Hz,1H),
7.75(d,J=8.1Hz,1H),
7.72(d,J=8.7Hz,1H),
7.53−7.43(m,2H),
7.40(dd,J=7.5,7.5Hz,1H),
7.32−7.12(m,5H),
7.01(d,J=6.9Hz,1H),
6.87−6.71(m,3H),
3.82(q,J=7.2Hz,1H),
3.62(s,3H),
1.52(d,J=7.2Hz,3H);
13C NMR(CDCl3):δ173.4,159.7,141.4,134.7,134.5,133.8,133.6,131.2,130.8,129.5,129.1,128.8,128.7,128.6,126.7,126.4,126.3,125.8,125.6,125.3,125.2,125.0,123.4,123.3,120.1,113.1,112.9,71.1,55.1,45.6,18.1;
HR MS:calcd for C31H26O3Na(M+Na+)469.1774,found 469.1766.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=0.5mL/min):
tR=17.8min(1.5%),tR=30.0min(98.5%);
1H NMR(CDCl3):δ
8.35(s,1H),
8.13−7.95(m,1H),
7.82−7.53(m,5H),
7.46−7.32(m,3H),
7.30−7.07(m,7H),
6.79(td,J=7.6,1.2Hz,1H),
6.68(dd,J=8.1,1.2Hz,1H),
4.08(q,J=7.2Hz,1H),
3.39(s,3H),
1.42(d,J=7.2Hz,3H);
13C NMR(CDCl3):δ174.1,156.8,135.2,135.0,133.8,133.7,131.2,131.0,128.9,128.8,128.74,128.67,128.61,128.3,128.1,126.6,126.4,126.2,125.8,125.7,125.6,125.14,125.06,123.7,123.6,120.5,110.3,70.8,55.0,39.6,16.8;
HR MS:calcd for C31H26O3Na(M+Na+)469.1774,found 469.1770;
Analytical data on racemic compound:Mp:160−161℃(CHCl3/petroleum ether);IR(KBr):3060,1730,1600,1494,778,758cm−1.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=0.5mL/min):
tR=17.9min(6.6%),tR=20.3min(93.4%);
IR(neat):3052,1737,1599,1510,837,777cm−1;
1H NMR(CDCl3):δ
8.26(d,J=3.0Hz,1H),
7.90(dd,J=7.5,3.0Hz,1H),
7.81(d,J=7.5Hz,1H),
7.75(t,J=8.5Hz,2H),
7.70(d,J=8.0Hz,1H),
7.62(dd,J=8.5,3.0Hz,1H),
7.45−7.32(m,3H),
7.26−7.04(m,8H),
6.93(dd,J=7.0,3.0Hz,1H),
3.73(qd,J=8.5,1.5Hz,1H),
1.45−1.41(m,3H);
13C NMR(CDCl3):δ173.1,138.4,134.5,134.4,133.8,133.7,133.0,131.1,130.8,129.2,129.1,128.9,128.7,128.6,128.3,126.7,126.4,126.1,125.9,125.7,125.3,125.2,124.5,123.3,123.2,71.4,45.0,18.0;
HR MS:calcd for C30H23O2ClNa(M+Na+)473.1279,found 473.1284.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=0.5mL/min):
tR=12.7min(6.3%),tR=16.9min(93.7%);
IR(neat):3055,2978,1736,1589,1242,1165,787,756cm−1;
1H NMR(CDCl3):δ
8.37(s,1H),
8.00(d,J=8.5Hz,1H),
7.91−7.87(m,1H),
7.82(dd,J=7.5,7.5Hz,2H),
7.77(d,J=8.0Hz,1H),
7.73(d,J=8.5Hz,1H),
7.52−7.45(m,2H),
7.42(dd,J=7.5,7.5Hz,1H),
7.33−7.27(m,2H),
7.26−7.17(m,4H),
7.14(dd,J=7.5,7.5Hz,1H),
7.09(d,J=7.5Hz,1H),
7.04(d,J=8.0Hz,1H),
3.81(q,J=7.0Hz,1H),
1.51(d,J=7.0Hz,3H);
13C NMR(CDCl3):δ172.9,141.9,134.6,134.4,134.4,133.8,133.7,131.2,130.9,129.8,129.2,128.9,128.9,128.7,127.9,127.4,126.8,126.4,126.2,126.0,125.9,125.8,125.4,125.2,125.0,123.34,123.25,71.4,45.3,18.1;
HR MS:calcd for C30H23ClO2Na(M+Na+)473.1279,found 473.1298.
HPLC(CHIRALPAK IC,i−PrOH/hexane=1/50,flow rate=1.0 mL/min):
tR=8.7min(6.0%),tR=10.8min(94.0%);
1H NMR(CDCl3):δ
8.35(s,1H)
8.12−7.96(m,1H)
7.83−7.65(m,5H),
7.42−7.38(m,2H),
7.34(t,J=7.5Hz,1H)
7.30−7.21(m,3H),
7.19−7.12(m,3H),
7.10−6.98(m,3H),
4.29(q,J=7.5Hz,1H),
1.43(d,J=7.5Hz,3H);
13C NMR(CDCl3):δ173.1,137.8,134.8,134.5,133.83,133.81,133.7,131.2,130.9,129.5,129.1,128.9,128.8,128.7,128.5,128.3,127.0,126.7,126.4,126.3,125.8,125.7,125.6,125.2,125.0,123.6,123.4,71.4,42.1,17.4;
HR MS:calcd for C30H23O2ClNa(M+Na+)473.1279,found 473.1261;
Analytical data on racemic compound:Mp:143−144℃(petroleum ether);IR(KBr):3067,1718,1598,1509,795,764cm−1.
試験例4で最適化した条件のもとで、基質1j−1〜28の不斉エステル化による動的速度論的光学分割において、一般性の検討をした。
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/50,flow rate=1.0mL/min):
tR=14.8min(4.1%),tR=19.8min(95.9%);
1H NMR(CDCl3):δ
8.29(s,1H),
7.99−7.94(m,1H),
7.84−7.79(m,1H),
7.74(t,J=7.0Hz,2H),
7.68(d,J=8.0Hz,1H),
7.63(d,J=8.5Hz,1H),
7.45−7.38(m,2H),
7.35−7.31(m,1H),
7.23−7.14(m,7H),
7.11(t,J=7.5Hz,1H),
7.06(d,J=7.5Hz,1H),
6.90(d,J=7.0Hz,1H),
3.77(q,J=7.0Hz,1H),
1.45(d,J=7.0Hz,3H);
13C NMR(CDCl3):δ173.5,140.0,134.8,134.6,133.8,133.7,131.2,130.8,129.1,128.9,128.7,128.64,128.57,127.8,127.2,126.7,126.4,126.3,125.9,125.6,125.2,125.0,123.5,123.3,71.1,45.6,18.2;
HR MS:calcd for C30H24O2Na(M+Na+)439.1669,found 439.1668;
Analytical data on racemic compound:Mp:128℃(i−PrOH/hexane);IR(KBr):3067,1728,1600,1509,776,699cm−1.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=0.5mL/min):
tR=19.0min(4.3%),tR=32.7min(95.7%);
1H NMR(CDCl3):δ
8.33(s,1H),
7.97−7.83(m,2H),
7.83−7.56(m,7H),
7.46−6.92(m,11H),
6.85(d,J=7.2Hz,1H),
4.54(q,J=6.9Hz,1H),
1.60(d,J=6.9Hz,3H);
13C NMR(CDCl3):δ174.0,136.0,134.7,134.4,133.9,133.8,133.7,131.4,131.2,130.9,129.0,128.82,128.80,128.7,128.6,128.3,127.8,126.7,126.4,126.22,126.16,125.8,125.7,125.6,125.4,125.1,124.9,124.8,123.5,123.4,123.3,71.3,41.6,17.9;
HR MS:calcd for C34H26O2Na(M+Na+)489.1825,found 489.1809;
Anallytical data on racemic compound:Mp:152−153℃(CHCl3/petroleum ether);IR(KBr):3055,1735,1599,1494,778,757cm−1.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=0.5mL/min):
tR=25.3min(5.6%),tR=53.0min(94.4%);
IR(neat):3060,1737,1599,1509,755cm−1;
1H NMR(CDCl3):δ
8.30(s,1H),
7.95(d,J=7.6Hz,1H),
7.86−7.52(m,8H),
7.45−7.31(m,4H),
7.30−7.11(m,4H),
7.10−7.00(m,2H),
6.92(dd,J=7.8,7.5Hz,1H),
6.87(dd,J=8.1,6.9Hz,1H),
3.92(q,J=6.9Hz,1H),
1.53(d,J=6.9Hz,3H);
13C NMR(CDCl3):δ173.5,137.5,134.7,134.5,133.8,133.6,133.4,132.6,131.2,130.8,129.1,128.8,128.7,128.6,128.3,128.2,127.8,127.5,126.7,126.4,126.3,126.04,125.98,125.84,125.77,125.6,125.3,125.2,125.0,123.4,123.3,71.3,45.8,18.3;
HR MS:calcd for C34H26O2Na(M+Na+)489.1825,found 489.1815.
HPLC(CHIRALPAK IC,i−PrOH/hexane=1/50,flow rate=1.0mL/min):
tR=14.7min(2.6%),tR=23.9min(97.4%);
1H NMR(CDCl3):δ
8.62(d,J=8.4Hz,1H),
8.55(d,J=8.1Hz,1H),
8.38(s,1H),
7.79−7.87(m,2H),
7.82−7.22(m,14H),
7.20−7.05(m,2H),
7.01−6.90(m,3H),
4.54(q,J=6.9Hz,1H),
1.66(d,J=6.9Hz,3H);
13C NMR(CDCl3):δ174.0,134.6,134.4,134.3,133.8,133.7,131.4,131.2,130.9,130.8,130.7,130.4,129.9,129.0,128.83,128.76,128.6,128.3,126.8,126.7,126.6,126.4,126.3,126.2,125.82,125.80,125.72,125.65,125.1,125.0,123.9,123.5,123.3,123.2,122.3,71.4,42.0,17.8;
HR MS:calcd for C38H28O2Na(M+Na+)539.1982,found 539. 1968;
Analytical data on racemic compound:Mp:115−117℃(CHCl3/petroleum ether);IR(KBr):3058,1733,1599,1509,779,747,726cm−1.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=1.0mL/min):
tR=15.1min(6.4%),tR=31.1min(93.6%);
IR(neat):3055,2978,1728,1242,1157,1041,787,733cm−1;
1H NMR(CDCl3):δ
8.34(s,1H),
8.00(d,J=8.5Hz,1H),
7.91−7.86(m,1H),
7.82(dd,J=8.0,8.0Hz,2H),
7.77(d,J=8.0Hz,1H),
7.72(d,J=9.0Hz,1H),
7.48(dddd,J=15.0,7.5,7.5,2.0Hz,2H),
7.44−7.38(m,1H),
7.33−7.27(m,2H),
7.25(dd,J=8.0,8.0Hz,1H),
7.19(d,J=7.5Hz,1H),
7.08(d,J=7.5Hz,1H),
6.74−6.72(m,1H),
6.69−6.67(m,1H),
5.90(s,2H),
3.75(q,J=7.0Hz,1H),
1.48(d,J=7.0Hz,3H);
13C NMR(CDCl3):δ173.5,147.7,146.7,134.7,134.5,133.8,133.74,133.69,131.2,130.9,129.1,128.84,128.81,128.6,126.7,126.3,126.2,125.8,125.6,125.4,125.2,125.0,123.5,123.3,120.1,108.20,108.16,100.9,71.2,45.2,18.2;
HR MS:calcd for C31H24O4Na(M+Na+)483.1567,found 483.1574.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/4,flow rate=0.5mL/min):
tR=17.6min(8.1%),tR=19.7min(91.9%);
IR(neat):3055,2939,1728,1597,1258,1158,787,733cm−1;
1H NMR(CDCl3):δ
8.35(s,1H),
8.01(d,J=7.5Hz,1H),
7.92−7.85(m,1H),
7.83(d,J=7.2Hz,1H),
7.81(d,J=7.5Hz,1H),
7.76(d,J=8.1Hz,1H),
7.70(d,J=8.7Hz,1H),
7.54−7.37(m,3H),
7.33−7.14(m,4H),
7.03(d,J=7.2Hz,1H),
6.82−6.71(m,2H),
6.67(d,J=1.5Hz,1H),
3.87(s,3H),
3.79(q,J=6.9Hz,1H),
3.58(s,3H),
1.52(d,J=6.9Hz,3H);
13C NMR(CDCl3):δ173.6,148.8,148.1,134.7,134.5,133.8,133.6,132.4,131.1,130.8,129.1,128.8,128.7,128.6,126.7,126.3,126.2,125.8,125.7,125.3,125.2,125.0,123.4,123.3,119.8,111.0,110.5,71.1,55.9,55.6,45.2,18.2;
HR MS:calcd for C32H28O4Na(M+Na+)499.1880,found 499.1877.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/4,flow rate=0.5mL/min):
tR=14.8min(5.0%),tR=18.2min(95.0%);
IR(neat):3055,2939,1736,1604,1157,1057,787,741cm−1;
1H NMR(CDCl3):δ
8.37(s,1H),
8.03(d,J=8.0Hz,1H),
7.92−7.86(m,1H),
7.82(dd,J=9.0,9.0Hz,2H),
7.77(d,J=8.5Hz,1H),
7.73(d,J=8.5Hz,1H),
7.53−7.44(m,2H),
7.42(dd,J=7.5,7.5Hz,1H),
7.33−7.20(m,3H),
7.18(d,J=7.0Hz,1H),
7.07(d,J=7.0Hz,1H),
6.38−6.34(m,3H),
3.78(q,J=7.0Hz,1H),
3.62(s,6H),
1.51(d,J=7.0Hz,3H);
13C NMR(CDCl3):δ173.2,160.8,142.2,134.7,134.5,133.8,133.7,131.2,130.9,129.1,128.9,128.7,128.6,126.7,126.4,126.3,125.9,125.7,125.4,125.2,125.0,123.5,123.3,105.6,99.6,71.2,55.2,45.9,18.1;
HR MS:calcd for C32H28O4Na(M+Na+)499.1880,found 499.1886.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/4,flow rate=0.5mL/min):
tR=14.9min(5.2%),tR=17.7min(94.8%);
1H NMR(CDCl3):δ
8.37(s,1H),
8.01(d,J=8.0Hz,1H),
7.90(d,J=7.0Hz,1H),
7.83(dd,J=8.5,8.5Hz,2H),
7.78(d,J=8.0 Hz,1H),
7.71(d,J=8.5Hz,1H),
7.55−7.44(m,2H),
7.43(dd,J=7.5,7.5Hz,1H),
7.35−7.22 (m,3H),
7.18(d,J=7.0Hz,1H),
7.06(d,J=7.0Hz,1H),
6.42−6.37(m,2H),
3.85(s,3H),
3.82−3.75(m,1H),
3.62(s,6H),
1.53(d,J=7.0Hz,3H);
13C NMR(CDCl3)δ173.3,153.2,135.5,135.5,134.6,134.5,133.8,133.7,131.2,130.9,129.2,128.9,128.8,128.7,126.7,126.4,126.3,125.9,125.7,125.4,125.2,125.0,123.5,123.3,104.6,71.3,60.8,55.9,45.9,18.1;
HR MS:calcd for C33H30O5Na(M+Na+)529.1985,found 529.1964;
Analytical data on racemic compound:Mp:85−86℃(CHCl3/petroleum ether);IR(KBr):3055,2939,1728,1589,1242,1134,787cm−1.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=0.5mL/min):
tR=12.3min(5.4%),tR=15.2min(94.6%);
IR(neat):3055,2978,1728,1604,1257,1157,1072,779,756,694cm−1;
1H NMR(CDCl3):δ
8.37(s,1H),
8.01(d,J=8.0Hz,1H),
7.89(d,J=8.0Hz,1H),
7.83(dd,J=8.0,8.0Hz,2H),
7.77(d,J=8.5Hz,1H),
7.73(d,J=8.5Hz,1H),
7.53−7.45(m,2H),
7.44−7.39(m,1H),
7.32(d,J=7.5Hz,1H),
7.29(d,J=7.5Hz,1H),
7.25−7.16(m,3H),
7.00−6.91(m,4H),
3.84(q,J=7.0Hz,1H),
1.52(d,J=7.0Hz,3H);
13C NMR(CDCl3):δ172.9,162.8(d,J=246.3Hz),142.3(d,J=7.5Hz),134.6,134.4,133.8,133.7,131.1,130.8,130.0(d,J=8.1Hz),129.2,128.9,128.9,128.7,126.7,126.4,126.1,125.9,125.7,125.3,125.2,125.0,123.50,123.47,123.3(d,J=7.5Hz),114.7(d,J=21.8Hz),114.1(d,J=21.2Hz),71.3,45.3,18.0;
HR MS:calcd for C30H23FO2Na(M+Na+)457.1574,found 457.1581.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=0.5mL/min):
tR=14.7min(3.7%),tR=18.5min(96.3%);
1H NMR(CDCl3):δ
8.42(s,1H),
8.09−8.04(m,1H),
7.91−7.86(m,1H),
7.85−7.79(m,3H),
7.77(d,J=8.5Hz,1H),
7.52−7.47(m,2H),
7.42(dd,J=8.0,8.0Hz,1H),
7.33(dd,J=8.0,8.0Hz,1H),
7.31(dd,J=8.0,8.0Hz,1H),
7.27−7.16(m,4H),
7.13(d,J=7.0Hz,1H),
7.03−6.96(m,2H),
4.18(q,J=7.5Hz,1H),
1.52(d,J=7.5Hz,3H);
13C NMR(CDCl3):δ173.0,160.4(d,J=246.0Hz),134.8,134.6,133.8,133.7,131.2,130.9,129.1,128.84(d,J=7.3Hz),128.81,128.78,128.70(d,J=6.3Hz),128.67,127.3(d,J=14.4Hz),126.7,126.4,126.2,125.9,125.7,125.4,125.2,125.0,124.1(d,J=3.1Hz),123.5,123.4,115.4(d,J=22.7Hz),38.4(d,J=2.0Hz),17.3;
HR MS:calcd for C30H23FO2Na(M+Na+)457.1574,found 457.1555;
Analytical data on racemic compound:MP:127−128°C(hexane);IR(KBr):3062,1736,1188,1157,779cm−1.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=0.5mL/min):
tR=15.1min(7.6%),tR=17.6min(92.4%);
1H NMR(CDCl3):δ
8.43(s,1H),
8.12−8.05(m,1H),
7.91−7.85(m,2H),
7.86(d,J=8.5Hz,1H),
7.82(d,J=8.0Hz,1H),
7.76(d,J=8.5Hz,1H),
7.53−7.47(m,3H),
7.44−7.40(m,1H),
7.36−7.30(m,2H),
7.28−7.20(m,3H),
7.17(d,J=7.0Hz,1H),
7.14(ddd,J=7.5,7.5,1.0Hz,1H),
7.06(ddd,J=7.5,7.5,2.0Hz,1H),
4.37(q,J=7.0Hz,1H),
1.51(d,J=7.0Hz,3H);
13C NMR(CDCl3):δ173.0,139.5,134.7,134.5,133.8,133.7,131.2,130.9,129.1,128.9,128.8,128.7,128.6,127.6,126.7,126.4,126.3,125.8,125.70,125.65,125.2,125.0,124.5,123.6,123.4,71.4,44.7,17.7;
HR MS:calcd for C30H23BrO2Na(M+Na+)517.0774,found 517.0781;
Analytical data on racemic compound:Mp:138−139℃(CHCl3/petroleum ether);IR(KBr):3055,1188,787cm−1.
HPLC(CHIRALPAK IC,i−PrOH/hexane=1/50,flow rate=0.5mL/min):
tR=19.0min(9.2%),tR=23.2min(90.8%);
1H NMR(CDCl3):δ
8.32(s,1H),
7.98−7.90(m,1H),
7.84−7.67(m,5H),
7.45−7.32(m,3H),
7.31−7.14(m,5H),
7.09(dd,J=7.5,1.8Hz,1H),
7.03(dd,J=7.8,1.8Hz,1H),
6.94(dd,J=7.8,7.5Hz,1H),
4.30(q,J=7.2Hz,1H),
1.43(d,J=7.2Hz,3H);
13C NMR(CDCl3):δ
172.7,140.1,134.6,134.3,133.8,133.7,133.2,131.1,130.9,129.2,129.0,128.9,128.7,128.3,127.5,127.2,126.7,126.6,126.52,126.45,126.2,125.9,125.8,125.2,125.0,123.5,123.3,71.7,43.1,17.4;
HR MS:calcd for C30H22O2Cl2Na(M+Na+)507.0889,found 507.0887;
Analytical data on racemic compound:MP:151−154°C(petroleum ether);IR(KBr):3059,1737,1598,1510,1158,778cm−1.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=0.5mL/min):
tR=13.6min(8.9%),tR=18.3min(91.1%);
1H NMR(CDCl3):δ
8.35(s,1H),
8.01−7.92(m,1H),
7.84−7.65(m,5H),
7.44−7.32(m,2H),
7.29−7.16(m,6H),
7.14−7.09(m,1H),
7.04(d,J=8.4Hz,1H),
6.97(dd,J=8.4,1.8Hz,1H),
4.35(q,J=7.2Hz,1H),
1.42(d,J=7.2Hz,3H);
13C NMR(CDCl3):δ
172.7,136.3,134.50,134.45,134.3,133.8,133.7,133.4,131.1,130.9,129.33,129.26,129.18,129.0,128.9,128.7,127.2,126.7,126.4,126.2,125.9,125.74,125.70,125.2,125.0,123.5,123.3,71.7,41.7,17.3;
HR MS:calcd for C30H22O2Cl2Na(M+Na+)507.0889,found 507.0896;
Analytical data on racemic compound:IR(neat):3060,1733,1590,1510,1474,1156,777cm−1.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=1.0mL/min):
tR=11.0min(7.6%),tR=13.4min(92.4%);
IR(neat):3055,2978,1736,1597,1242,1157,1080,779,741,694cm−1;
1H NMR(CDCl3):δ
8.34(s,1H),
7.97(d,J=8.1Hz,1H),
7.93−7.85(m,1H),
7.83(d,J=7.2Hz,1H),
7.81(d,J=8.1Hz,1H),
7.77(d,J=8.1Hz,1H),
7.72(d,J=8.7Hz,1H),
7.54−7.37(m,3H),
7.36−7.16(m,5H),
7.11−6.99(m,2H),
6.73(d,J=8.4Hz,1H),
3.85(s,3H),
3.76(q,J=6.9Hz,1H),
1.49(d,J=6.9Hz,3H);
13C NMR(CDCl3):δ173.2,154.1,134.6,134.4,133.8,133.7,133.0,131.1,130.8,129.4,129.1,128.9,128.8,128.7,127.0,126.7,126.4,126.1,125.8,125.7,125.4,125.2,125.0,123.4,123.3,122.3,111.9,71.4,56.1,44.5,18.1;
HR MS:calcd for C31H25ClO3Na(M+Na+)503.1384,found 503.1387.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/4,flow rate=1.0mL/min):
tR=13.9min(6.9%),tR=35.8min(93.1%);
IR(neat):3035,1735,1660,1599,1511,780,680cm−1;
1H NMR(CDCl3):δ
8.28(s,1H),
7.93−7.85(m,1H),
7.82−7.54(m,6H),
7.52−7.44(m,2H),
7.44−7.06(m,13H),
6.95(d,J=7.1Hz,1H),
3.81(q,J=7.1Hz,1H),
1.46(d,J=7.1Hz,3H);
13C NMR(CDCl3):δ196.3,173.0,140.1,137.8,137.3,134.5,134.4,133.8,133.7,132.4,131.6,131.1,130.8,129.9,129.5,129.2,128.93,128.91,128.86,128.7,128.6,128.3,128.2,126.7,126.4,126.1,125.9,125.7,125.4,125.2,125.0,123.2,71.4,45.5,17.9;
HR MS:calcd for C37H28O3Na(M+Na+)543.1931,found 543.1910.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/50,flow rate=1.0mL/min):
tR=21.0min(6.7%),tR=25.2min(93.3%);
IR(neat):3036,1735,1585,1484,781,679cm−1;
1H NMR(CDCl3):δ
8.28(s,1H),
7.92(d,J=8.0Hz,1H),
7.82−7.62(m,5H),
7.43−7.30(m,3H),
7.27−7.09(m,7H),
6.98−6.91(m,3H),
6.86−6.83(m,1H),
6.82−6.73(m,3H),
3.72(q,J=7.0Hz,1H),
1.42(d,J=7.0Hz,3H);
13C NMR(CDCl3):δ173.1,157.3,157.0,141.9,134.7,134.6,133.8,133.7,131.2,130.9,129.8,129.7,129.1,128.9,128.8,128.7,128.3,126.7,126.4,126.1,125.9,125.7,125.3,125.2,125.1,123.4,123.3,123.1,122.6,118.7,118.4,117.6,71.2,45.5,17.9;
HR MS:calcd for C36H28O3Na(M+Na+)531.1931,found 531.1948.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=0.75mL/min):
tR=10.8min(9.5%),tR=17.7min(90.5%);
IR(neat):3035,1734,1599,1513,783,679cm−1;
1H NMR(CDCl3):δ
8.29(s,1H),
7.95−7.86(m,1H),
7.80−7.72(m,1H),
7.70(d,J=8.1Hz,2H),
7.64(d,J=8.1Hz,2H),
7.46−7.04(m,13H),
7.01−6.90(m,3H),
3.74(q,J=7.0Hz,1H),
1.44(t,J=7.0Hz,3H);
13C NMR(CDCl3):δ172.9,159.6(d,J=248.2Hz),141.3,141.2,135.5,134.6,134.4,133.8,133.7,131.1,130.9,130.7(d,J=3.7Hz),129.2,128.9(d,J=3.2Hz),128.7,128.5,128.3,127.8(d,J=13.7Hz),127.7,126.7,126.4,126.1,125.9,125.7,125.4,125.2,125.0,123.8(d,J=3.1Hz),123.4,123.3,115.4(d,J=23.6Hz),71.5,45.1,17.9;
HR MS:calcd for C36H27O2FNa(M+Na+)533.1887,found 533.1865.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=1.0mL/min):
tR=13.1min(5.1%),tR=16.5min(94.9%);
IR(neat):3034,1733,1604,1508,782,679cm−1;
1H NMR(CDCl3):δ
8.29(s,1H),
8.00−7.90(m,1H),
7.82−6.96(m,17H),
6.95−6.81(m,2H),
3.86(q,J=7.0Hz,1H),
3.79(s,3H)
1.49(d,J=7.0Hz,3H);
13C NMR(CDCl3):δ173.6,157.6,135.1,134.7,134.5,133.8,133.7,133.6,131.2,130.8,129.3,129.1,128.9,128.8,128.7,128.6,128.3,127.1,126.7,126.5,126.3,126.2,125.8,125.6,125.3,125.2,125.0,123.4,123.3,118.9,105.5,71.2,55.2,45.5,18.3;
HR MS:calcd for C35H28O3Na(M+Na+)519.1931,found 519.1932.
HPLC(CHIRALPAK IA,i−PrOH/hexane=1/9,flow rate=0.5mL/min):
tR=23.5min(94.4%),tR=28.3min(5.6%);
1H NMR(CDCl3):δ
8.36(s,1H),
8.06−7.97(m,1H),
7.95−7.86(m,1H),
7.82(dd,J=8.1,4.2Hz,2H),
7.76(dd,J=8.9,8.9Hz,2H),
7.55−7.37(m,3H),
7.34−7.12(m,6H),
7.08−6.98(m,3H),
3.82(q,J=7.2Hz,1H),
3.14(ddd,J=13.7,3.3,3.3Hz,1H),
2.51(ddd,J=13.7,10.2,3.3Hz,1H),
2.42−2.25(m,2H),
2.19−1.88(m,3H),
1.83−1.64(m,1H),
1.51(d,J=7.2Hz,3H);
13C NMR(CDCl3):δ
220.0,173.5,138.90,138.88,137.8,134.8,134.6,133.8,133.7,131.18,131.17,130.9,129.1,129.0,128.8,128.7,128.6,127.8,126.68,126.67,126.3,126.2,126.1,125.8,125.63,125.61,125.29,125.26,125.2,124.9,123.5,123.34,123.32,71.05,71.04,51.0,45.2,38.2,35.2,35.1,29.2,29.1,20.5,18.13,18.11;
HR MS:calcd for C36H32O3Na(M+Na+)535.2244,found 535.2232;
Analytical data on racemic compound:IR(neat):2970,1736,1597,1450,779,756cm−1.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/4,flow rate=1.0mL/min):
tR=16.4min(89.2%),tR=19.6min(10.8%);
1H NMR(CDCl3):δ
8.35(s,1H),
8.23−8.14(m,1H),
8.01−7.92(m,1H),
7.91−7.82(m,1H),
7.80(dd,J=8.4,8.4Hz,2H),
7.72(dd,J=9.3,9.3Hz,2H),
7.51−7.40(m,3H),
7.39−7.16(m,5H),
7.12−6.98(m,4H),
6.95−6.89(m,1H),
3.88−3.70(m,3H),
1.52(d,J=7.2Hz,3H);
13C NMR(CDCl3):δ
173.4,158.4,150.8,146.6,138.3,135.3,134.6,134.5,133.8,133.7,131.1,130.9,129.1,128.81,128.81,128.6,127.6,127.4,126.7,126.3,126.1,125.8,125.6,125.4,125.1,125.0,123.4,123.3,119.8,119.5,117.1,115.3,71.4,44.9,27.8,18.0;
HR MS:calcd for C36H27NO3Na(M+Na+)544.1833,found 544.1880;
Analytical data on racemic compound:MP:189−190°C(i−PrOH/hexane);IR(KBr);3055,1728,1666,1427,1157,787cm−1.
HPLC(CHIRALPAK IC,i−PrOH/hexane=1/1,flow rate=1.0mL/min):
tR=13.7min(95.2%),tR=16.8min(4.8%);
1H NMR(CDCl3):δ
8.37(s,1H),
8.07−7.97(m,1H),
7.96−7.84(m,2H),
7.80(d,J=8.1Hz,2H),
7.78−7.69(m,4H),
7.62−7.43(m,5H),
7.38(dd,J=7.2,7.2Hz,1H),
7.34−7.16(m,6H),
7.07(d,J=8.4Hz,1H),
4.76(s,2H),
3.85(q,J=7.2Hz,1H),
1.53(d,J=7.2Hz,3H);
13C NMR(CDCl3):δ
173.4,167.4,140.0,138.5,135.9,134.7,134.5,133.8,133.7,133.1,132.04,132.04,131.2,130.8,129.1,128.83,128.78,128.6,128.43,128.43,128.35,126.7,126.4,126.2,125.8,125.6,125.4,125.2,125.1,124.1,123.4,123.3,122.6,119.5,71.2,50.6,45.1,18.1;
HR MS:calcd for C38H29NO3Na(M+Na+)570.2040,found 570.2018;
Analytical data on racemic compound:MP:193−194°C(i−PrOH/hexane);IR(KBr):3047,1728,1697,1458,1157,787cm−1
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/4,flow rate=1.0mL/min):
tR=9.6min(95.6%),tR=12.9min(4.4%);
1H NMR(DMSO−d6):δ
11.4(s.1H),
8.28(s,1H),
8.23(s,1H),
8.10(d,J=7.5Hz,1H),
8.07−7.94(m,2H),
7.93(d,J=8.5Hz,1H),
7.89(d,J=8.5Hz,1H),
7.81(d,J=7.0Hz,1H),
7.69(d,J=8.5Hz,1H),
7.67−7.25(m,7H),
7.24−7.00(m,3H),
6.87(d,J=7.5Hz,1H),
4.22−4.09(m,1H),
1.53(d,J=7.5Hz,3H);
13C NMR(DMSO−d6):δ
173.4,140.8,138.6,138.5,134.5,134.3,133.6,133.4,130.7,130.3,129.2,129.1,128.9.128.8,127.2,126.7,126.2,126.0,125.9,125.5,125.4,125.1,125.0,123.7,123.1,123.0,122.98,122.95,121.0,120.9,119.9,118.9,112.6,110.3,70.6,45.2,18.7;
Analytical data on racemic compound:MP:250−251°C(EtOAc/hexane);IR(KBr):3356,3062,1705,1466,1173,787cm−1.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=0.5mL/min):
tR=14.4min(93.6%),tR=16.9min(6.4%);
1H NMR(CDCl3):δ
8.41−8.34(m,1H),
8.27(d,J=8.5Hz,1H),
8.13(s,1H),
8.00(d,J=6.5Hz,1H),
7.88(s,1H),
7.84(d,J=7.5Hz,1H),
7.80−7.64(m,5H),
7.46−7.37(m,3H),
7.28−7.09(m,5H),
7.08−6.99(m,2H),
4.06−3.95(m,1H),
1.62(dd,J=7.5,2.5Hz,3H),
1.56(s,9H);
13C NMR(CDCl3):δ
173.3,150.5,139.8,138.9,137.2,134.7,134.4,133.8,133.6,131.2,130.8,129.1,128.8,128.7,128.6,128.5,126.9,126.8,126.6,126.22,126.18,125.8,125.5,125.4,125.1,124.9,123.8,123.4,123.3,123.1,119.7,119.2,117.3,115.8,84.2,71.4,46.2,28.1,18.4;
HR MS:calcd for C41H34O4NClNa(M+Na+)662.2069,found 662.2052;
Analytical data on racemic compound:IR(neat):2978,1728,1466,1157,764,741cm−1.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=0.5mL/min):
tR=14.9min(4.4%),tR=17.5min(95.6%);
1H NMR(CDCl3):δ
8.38(s,1H),
8.03−7.95(m,1H),
7.92−7.74(m,5H),
7.53−7.38(m,3H),
7.37−7.11(m,6H),
6.93−6.87(m,2H),
4.13(q,J=7.2Hz,1H),
1.59(d.J=7.2Hz,3H);
13C NMR(CDCl3):δ
172.5,142.3,134.6,134.4,133.8,133.7,131.1,130.9,129.1,128.9,128.8,128.7,126.7,126.6,126.5,126.0,125.8,125.7,125.4,125.19,125.19,125.1,124.4,123.4,123.3,71.5,41.0,19.2;
HR MS:calcd forC28H22O2SNa(M+Na+)445.1233,found 445.1222;
Analytical data on racemic compound:MP:139−140°C(EtOAc/hexane);IR(KBr):3055,1736,1450,1173,787,702cm−1.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=0.5mL/min):
tR=17.0min(4.4%),tR=20.1min(95.6%);
1H NMR(CDCl3):δ
8.36(s,1H),
7.98(d,J=8.5Hz,1H),
7.89(d,J=7.5Hz,1H),
7.85(d,J=8.5Hz,1H),
7.82(d,J=8.5Hz,1H),
7.78(d,J=7.5Hz,1H),
7.77(d,J=7.0Hz,1H),
7.53−7.40(m,3H),
7.38−7.15(m,5H),
7.12−7.05(m,2H),
6.98(d,J=5.0Hz,1H),
3.97(q,J=7.5Hz,1H),
1.53(d,J=7.5Hz,3H);
13C NMR(CDCl3):δ
173.1,140.1,134.8,134.6,133.8,133.7,131.2,131.0,129.1,128.84.128.84,128.7,127.2,126.7,126.4,126.1,125.9,125.7,125.6,125.4,125.2,125.1,123.4,123.3,121.6,71.2,41.2,17.9;
HR MS:calcd forC28H22O2SNa(M+Na+)445.1233,found 445.1214;
Analytical data on racemic compound:MP:178−179°C(i−PrOH/hexane);IR(KBr):3055,1728,1450,1180,779cm−1.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=1.0mL/min):
tR=28.0min(98.6%),tR=34.8min(1.4%);
1H NMR(CDCl3):δ
8.41(s.1H),
7.95(d,J=8.5Hz,1H),
7.92−7.76(m,5H),
7.71(d,J=7.5Hz,2H),
7.52−7.18(m,9H),
7.11(d,J=7.5Hz,1H),
6.66(d,J=3.5Hz,1H),
6.10(d,J=3.5Hz,1H),
3.97(q.J=7.0Hz,1H),
3.75(s,3H),
2.42(s,3H),
1.60(d,J=7.0Hz,3H);
13C NMR(CDCl3):δ
185.8,171.6,141.9,140.1,137.4,134.4,134.3,133.81,133.76,131.2,131.0,130.9,129.41,129.41,129.21,129,15,128.9,128.8,128.67,128.67,126.7,126.6,125.9,125.83,125.83,125.7,125.2,125.1,123.24,123.19,122.3,107.4,71.8,37.7,33.0,21.5,16.3;
HR MS:calcd forC37H31NO3Na(M+Na+)560.2196,found 560.2191;
Analytical data on racemic compound:IR(neat):2985,1736,1620,1458,1250,1165,787,756cm−1.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/50,flow rate=0.6mL/min):
tR=27.6min(6.6%),tR=33.0min(93.4%);
1H NMR(CDCl3):δ
8.41(s,1H),
8.02(d,J=8.5Hz,1H),
7.97(d,J=10.0Hz,1H),
7.96(d,J=7.5Hz,1H),
7.83(d,J=7.5Hz,1H),
7.81(d,J=8.5Hz,1H),
7.77(d,J=9.5Hz,1H),
7.75(d,J=8.5Hz,1H),
7.46−7.14(m,11H),
6.50(s,1H),
4.69(q,J=7.0Hz,1H),
1.63(d,J=7.0Hz,3H),
1.42(s,9H);
13C NMR(CDCl3):δ
172.8,150.5,139.6,136.3,135.1,134.6,133.8,133.7,131.2,131.1,128.92,128.88,128.8,128.7,128.6,126.5,126.4,126.3,126.2,125.7,125.6,125.2,125.1,123.83,123.76,123.6,122.6,120.3,120.3,115.7,108.2,84.1,71.6,40.3,27.9,16.9;
HR MS:calcd forC37H33NO4Na(M+Na+)578.2302,found 578.2286;
Analytical data on racemic compound:IR(neat):2978,1736,1705,1458,1157,779,756cm−1.
HPLC(CHIRALPAK AD−H,i−PrOH/hexane=1/9,flow rate=0.5mL/min):
tR=11.3min(0.3%),tR=21.7min(99.7%);
1H NMR(CDCl3):δ
8.37(s,1H),
8.13(d,J=8.1Hz,1H),
7.92(d,J=8.4Hz,1H),
7.88(d,J=7.8Hz,1H),
7.82(d,J=8.1Hz,1H),
7.81(d,J=8.1Hz,1H),
7.54(d,J=8.4Hz,1H),
7.51−7.34(m,5H),
7.32−7.02(m,7H),
4.07(q,J=7.2Hz,1H),
1.66−1.60(m,12H);
13C NMR(CDCl3):δ
173.3,149.6,134.6,134.4,133.8,133.7,131.1,130.9,129.0,128.9,128.8,128.6,126.6,126.4,126.0,125.8,125.71,125.71,125.1,125.0,124.45,124.45,123.43,123.38,123.17,123.17,122.4,119.47,119.41,115.1,83.6,71.6,37.1,28.2,17.0;
HR MS:calcd forC37H33NO4Na(M+Na+)578.2302,found 578.2285;
Analytical data on racemic compound:IR(neat):2978,1736,1728,1458,1157,787,756cm−1.
Claims (4)
- 動的速度論的光学分割による光学活性カルボン酸エステルの製造方法であって、
ラセミのカルボン酸と、下記式(a)で表されるアルコール又は下記式(b)で表されるフェノール誘導体とを、酸無水物と不斉触媒との存在下、双極子モーメント3.0以上の極性溶媒中で反応させ、前記ラセミのカルボン酸のうち一方のエナンチオマーを選択的にエステル化するとともに、他方のエナンチオマーをラセミ化することを特徴とする光学活性カルボン酸エステルの製造方法。
- 前記式(g)中、Rg1、Rg2のいずれか一方は、多重結合を有する炭素原子を介して不斉炭素と結合する有機基であり、他方は、多重結合を有さない炭素原子を介して不斉炭素と結合する有機基であることを特徴とする請求項3記載の光学活性カルボン酸エステルの製造方法。
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US9315442B2 (en) | 2016-04-19 |
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