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蒲黃化學(xué)成分研究

2015-02-12 19:38:30李鋒濤陶偉偉楊念云李勇軍段金廒
關(guān)鍵詞:香蒲分子式柱層析

陳 毓 ,李鋒濤,,陶偉偉,楊念云,李勇軍,陳 巍,段金廒*

1江蘇農(nóng)牧科技職業(yè)學(xué)院,泰州 225300;2 南京中醫(yī)藥大學(xué) 江蘇省中藥資源產(chǎn)業(yè)化過(guò)程協(xié)同創(chuàng)新中心中藥資源產(chǎn)業(yè)化與方劑創(chuàng)新藥物國(guó)家地方聯(lián)合工程研究中心,南京 210023

蒲黃為香蒲科植物水燭香蒲Typha angustifolia L.、東方香蒲Typha orientalis Presl 或同屬植物的干燥花粉。具有止血、化瘀、通淋的功效。蒲黃的化學(xué)成分研究始于20 世紀(jì)20年代,至今從香蒲屬植物中分離得到的化學(xué)成分有黃酮、烷烴、甾類、有機(jī)酸、多糖、揮發(fā)油等。研究發(fā)現(xiàn),蒲黃的乙酸乙酯和正丁醇部位可明顯縮短小鼠凝血時(shí)間[1];乙酸乙酯部位對(duì)家兔血小板聚集有明顯的抑制作用,對(duì)小鼠和大鼠體內(nèi)血栓形成也有明顯抑制作用,并對(duì)血管內(nèi)皮有明顯的保護(hù)作用[2]。在藥效學(xué)研究的基礎(chǔ)上,我們開(kāi)展了蒲黃化學(xué)成分的研究,對(duì)其乙酸乙酯和正丁醇部位進(jìn)行了系統(tǒng)分離,以期為闡明其功效物質(zhì)基礎(chǔ)奠定基礎(chǔ)。

1 儀器與材料

JASCO P-1020 旋光儀(日本Jasco 公司);IR100型紅外光譜儀(美國(guó)Thermo 公司);Bruker Avance AV500/300 型核磁共振儀(德國(guó)Bruker 公司);SynaptTMQ-TOF 型質(zhì)譜儀(美國(guó)Waters 公司);薄層層析和柱層析用硅膠(青島海洋化工廠產(chǎn)品);其余試劑均為分析純。

蒲黃購(gòu)于南京藥業(yè)股份有限公司中藥飲片廠(產(chǎn)地:江蘇,批號(hào):20080923),經(jīng)南京中醫(yī)藥大學(xué)段金廒教授鑒定為香蒲科植物水燭香蒲Typha angustifolia L.的花粉。

2 提取與分離

取乙酸乙酯部位浸膏,經(jīng)硅膠柱層析分離,依次用石油醚-乙酸乙酯(2∶1→1∶2→0∶1)和乙酸乙酯-甲醇(10∶1)梯度洗脫,得到4 個(gè)組分(Fr.1~ Fr.4)。Fr.1 有晶體析出,重結(jié)晶后得到化合物1(500 mg)。Fr.1 經(jīng)硅膠柱層析,石油醚-乙酸乙酯梯度洗脫,得到化合物25(18 mg)、10(35 mg)以及6 個(gè)組分(Fr.1-1~Fr.1-6)。Fr.1-1 和Fr.1-4 經(jīng)硅膠柱層析分別得到化合物23(12 mg)、17(110 mg)和21(30 mg)、22(26 mg);Fr.1-2 和Fr.1-3 分別乙酸乙酯重結(jié)晶,得到化合物18(20 mg)和20(23 mg)。Fr.2 硅膠柱層析,石油醚-乙酸乙酯梯度洗脫,得到化合物24(14 mg)、19(10 mg)以及5 個(gè)組分(Fr.2-1~Fr.2-5)。Fr.2-1 經(jīng)硅膠柱層析和葡聚糖凝膠柱層析,得到化合物9(8mg);Fr.2-3 和Fr.2-5 分別經(jīng)乙酸乙酯重結(jié)晶得到化合物26(35mg)和11(16 mg);Fr.2-4 經(jīng)硅膠柱層析,乙酸乙酯重結(jié)晶得到化合物12(9 mg)。Fr.3 經(jīng)硅膠柱層析,石油醚-乙酸乙酯-甲醇梯度洗脫,得到化合物16(25mg)。

取正丁醇部位浸膏,經(jīng)硅膠柱層析分離,依次用乙酸乙酯-甲醇(10∶1→5∶2→2∶1)梯度洗脫,得到3個(gè)組分(Fr.5~Fr.7)。Fr.6 經(jīng)硅膠柱層析分離,乙酸乙酯-甲醇梯度洗脫,得到化合物13(15 mg)以及3 個(gè)組分(Fr.6-1~Fr.6-3)。Fr.6-1 經(jīng)硅膠柱層析以及聚酰胺柱層析,得到化合物5(70 mg)及1 個(gè)組分,該組分進(jìn)一步聚酰胺柱層析,得到化合物6(90 mg)、2(16mg)以及2 個(gè)組分,此2 個(gè)組分經(jīng)制備HPLC 分離,分別得到化合物4(12 mg)、8(16 mg)和3(12mg)、7(8 mg)。Fr.6-2 經(jīng)硅膠柱層析得到化合物14(35 mg)和15(30mg)。

3 結(jié)構(gòu)鑒定

化合物1 白色粉末(EtOAc);ESI-MS m/z:271[M-H]-,分子式C15H12O5;UV λmax288;1H NMR(DMSO-d6,300 MHz)δ:12.16(1H,s,-OH),10.77(1H,s,-OH),9.58(1H,s,-OH),7.32(2H,d,J=8.43 Hz,H-2',6'),6.81(2H,d,J=8.40 Hz,H-3',5'),5.90(1H,s,H-6,8),5.41(1H,dd,J=12.8,2.73 Hz,H-2),3.25(1H,dd,J=12.81,17.01 Hz,H-3a),2.68(1H,dd,J=2.91,17.01 Hz,H-3b);13C NMR(DMSO-d6,75 MHz)δ:78.5(C-2),42.1(C-3),196.5(C-4),163.8(C-5),95.9(C-6),167.0(C-7),95.2(C-8),163.2(C-9),101.9(C-10),129.3(C-1'),128.4 (C-2',C-6'),115.3 (C-3',C-5'),158.2(C-4')。以上數(shù)據(jù)與文獻(xiàn)[3,4]報(bào)道一致,鑒定為柚皮素。

化合物2 黃色粉末(EtOAc);ESI-MS m/z:623[M-H]-,分子式C28H32O16;UV λmax254,354;1H NMR (CD3OD,300 MHz)δ:7.93(1H,d,J=1.83 Hz,H-2'),7.60(1H,dd,J=1.83,8.43 Hz,H-6'),6.89(1H,d,J=8.43 Hz,H-5'),6.38(1H,s,H-8),6.19(1H,s,H-6),5.22(1H,d,J=7.50 Hz,H-1''),4.52(3H,s,1'''),3.93(3H,s,-OCH3),1.09(3H,d,J=6.21 Hz,H-6''');13C NMR(CD3OD,75 MHz)δ:159.3(C-2),135.9(C-3),179.7(C-4),163.4(C-5),100.5(C-6),166.7(C-7),95.4(C-8),158.9(C-9),106.1(C-10),123.4(C-1'),115.1(C-2'),151.3(C-3'),148.8(C-4'),116.6(C-5'),124.5 (C-6'),102.9(C-1''),76.4(C-2''),78.6(C-3''),72.8(C-4''),77.8(C-5''),69.0(C-6''),104.9(C-1'''),72.1(C-2'''),72.5(C-3'''),74.3(C-4'''),70.2(C-5'''),18.3(C-6'''),57.2(-OCH3)。以上數(shù)據(jù)與文獻(xiàn)[5]報(bào)道一致,鑒定為異鼠李素-3-O-蕓香糖苷(水仙苷)。

化合物3 黃色粉末(EtOAc);ESI-MS m/z:609[M-H]-,分子式C27H30O16;UV λmax255,355;1H NMR (CD3OD,300 MHz)δ:7.61(1H,d,J=2.19 Hz,H-2'),7.59(1H,d,J=7.50 Hz,H-6'),6.86(1H,d,J=8.61 Hz,H-5'),6.35(1H,S,H-8),6.16(1H,d,J=2.01 Hz,H-6),5.73(1H,d,J=7.68 Hz,H-1''),5.21(H,s,1'''),0.96(3H,d,J=6.21 Hz,6''');13C NMR(CD3OD,75 MHz)δ:158.9(C-2),135.0(C-3),179.8(C-4),100.2(C-6),166.2(C-7),95.0(C-8),158.9(C-9),106.4(C-10),123.7(C-1'),116.4(C-2'),150.1(C-3'),146.5(C-4'),117.7(C-5'),123.9(C-6'),100.8(C-1''),80.6(C-2''),78.7(C-3''),72.8(C-4''),79.4(C-5''),63.0(C-6''),103.1 (C-1'''),72.2 (C-2'''),72.8 (C-3'''),74.5(C-4'''),70.4(C-5'''),17.9(C-6''')。以上數(shù)據(jù)與文獻(xiàn)[6]報(bào)道一致,鑒定為槲皮素-3-O-新橙皮糖苷。

化合物4 黃色粉末(EtOAc);ESI-MS m/z:755[M-H]-,分子式C33H40O20;UV λmax255,353;1H NMR (CD3OD,300 MHz)δ:7.60(1H,d,H-2'),7.58(1H,d,H-6'),6.86(1H,d,J=9.15 Hz,H-5'),6.35(1H,d,J=2.01 Hz,H-8),6.16(1H,d,J=2.01 Hz,H-6),5.58(1H,d,J=7.50 Hz,H-1''),5.22(1H,s,1'''),4.50(1H,S,1''''),1.07(3H,d,J=6.03 Hz,6''''),1.00(3H,d,J=6.21 Hz,6''');13C NMR(CD3OD,75 MHz)δ:159.4(C-2),134.9(C-3),179.7(C-4),163.5(C-5),100.2(C-6),166.0(C-7),95.1(C-8),158.9(C-9),106.4(C-10),123.9(C-1'),116.5(C-2'),149.9(C-3'),146.3(C-4'),117.9(C-5'),124.0(C-6'),100.9(C-1''),80.5(C-2''),79.3(C-3''),74.3(C-4''),77.5(C-5''),68.7(C-6''),102.7(C-1'''),72.8(C-2'''),72.5(C-3'''),74.3(C-4'''),70.2(C-5'''),18.2(C-6'''),103.1(C-1''''),72.7(C-2''''),72.3(C-3''''),74.3(C-4''''),70.4(C-5''''),18.0(C-6'''')。以上數(shù)據(jù)與文獻(xiàn)[7]報(bào)道一致,鑒定為槲皮素-3-O-(2G-α-L-鼠李糖基)-蕓香糖苷。

化合物5 黃色針晶(EtOAc);ESI-MS m/z:623[M-H]-,分子式C28H32O16;UV λmax254,354;1H NMR(DMSO-d6,500 MHz)δ:7.95(1H,d,J=2.20 Hz,H-2'),7.50(1H,dd,J=8.55,2.15 Hz,H-6'),6.91(1H,d,J=8.55 Hz,H-5'),6.43(1H,d,J=2.15 Hz,H-8),6.20(1H,d,J=2.15 Hz,H-6),5.76(1H,d,J=7.65 Hz,H-1''),5.03(H,S,1'''),0.66(3H,d,J=6.10 Hz,6''')。以上數(shù)據(jù)與文獻(xiàn)[8]報(bào)道一致,經(jīng)與異鼠李素-3-O-新橙皮糖對(duì)照品薄層比較,Rf值及顯色行為一致。與異鼠李素-3-O-新橙皮糖對(duì)照品HPLC 圖譜比較,保留時(shí)間及吸收波長(zhǎng)均一致。鑒定為異鼠李素-3-O-新橙皮糖苷。

(1)合規(guī)性風(fēng)險(xiǎn)。建議學(xué)校首先實(shí)施必要的遴選程序,并經(jīng)學(xué)校黨委常委會(huì)等集體決策程序執(zhí)行“三重一大”決策程序明確酒店的經(jīng)營(yíng)管理單位;其次,該模式涉及學(xué)校房產(chǎn)對(duì)外出租出借行為,相關(guān)租金需進(jìn)行資產(chǎn)評(píng)估協(xié)商確定,協(xié)議期限不得超過(guò)5年,并履行相應(yīng)報(bào)批報(bào)備手續(xù)。

化合物6 黃色針晶(EtOAc);ESI-MS m/z:769[M-H]-,分子式C34H42O20;UV λmax254,354;1H NMR(CD3OD,500 MHz)δ:7.92(1H,d,J=1.85 Hz,H-2'),7.56(1H,dd,J=8.55,2.10 Hz,H-6'),6.90(1H,d,J=8.55 Hz,H-5'),6.38(1H,d,J=2.15 Hz,H-8),6.18(1H,d,J=2.15 Hz,H-6),5.71(1H,d,J=7.56 Hz,H-1''),5.19(H,s,1'''),4.53(H,S,1''''),1.05(3H,d,J=6.10 Hz,6''''),0.92(3H,d,J=6.10 Hz,6''')。以上數(shù)據(jù)與文獻(xiàn)[9]報(bào)道一致,經(jīng)與香蒲新苷對(duì)照品薄層比較,Rf值及顯色行為一致。與香蒲新苷對(duì)照品HPLC 圖譜比較,保留時(shí)間及吸收波長(zhǎng)均一致。鑒定為香蒲新苷。

化合物7 黃色粉末(EtOAc);ESI-MS m/z:593[M-H]-,分子式C27H30O15;UV λmax265,348;1H NMR (DMSO-d6,500 MHz)δ:8.0(1H,d,J=8.85 Hz,H-2'),6.88(1H,d,J=8.85 Hz,H-3'),8.0(1H,d,J=8.85 Hz,,H-6'),6.88(H,d,J=8.85 Hz,H-5'),6.42(1H,d,J=2.15 Hz,H-8),6.20(1H,d,J=2.15 Hz,H-6),5.6 (1H,d,J=7.60 Hz,H-1''),5.07(H,s,1'''),0.77(3H,d,J=6.15 Hz,6''')。以上數(shù)據(jù)與文獻(xiàn)[10]報(bào)道一致,鑒定為山柰酚-3-O-新橙皮糖苷。

化合物8 黃色粉末(EtOAc);ESI-MS m/z:739[M-H]-,分子式C33H40O19;UV λmax265,348;1H NMR (CD3OD,500 MHz)δ:8.03(1H,d,J=8.85 Hz,H-2'),6.94 (1H,d,J=8.85 Hz,H-3'),8.03(1H,d,J=8.85 Hz,,H-6'),6.94(1H,d,J=8.80 Hz,H-5'),6.44(1H,d,J=2.15 Hz,H-8),6.29(1H,d,J=2.15 Hz,H-6),5.70(1H,d,J=7.65 Hz,H-1''),5.18(H,s,1'''),4.53(H,s,1''''),1.05(3H,d,J=6.10 Hz,6''''),0.91(3H,d,J=6.10 Hz,6''')。以上數(shù)據(jù)與文獻(xiàn)[7]報(bào)道一致,鑒定為山柰酚-3-O-(2G-α-L-鼠李糖基)-蕓香糖苷。

化合物9 無(wú)色針晶(Pet/ EtOAc);ESI-MS m/z:427[M-H]-,分子式C28H44O3;1H NMR (CDCl3,500 MHz)δ:6.50(1H,d,J=8.55 Hz,H-7),6.24(1H,d,J=8.55 Hz,H-6),5.23(1H,dd,J=7.30,13.25 Hz,H-22),5.15(1H,dd,J=8.55,13.25 Hz,H-23),3.97(1H,m,H-23),0.88(3H,s,H-18),0.82(3H,s,H-19),1.00(3H,d,H-21),0.91(3H,d,H-28),0.83(3H,d,H-27),0.82(3H,d,H-26);13C NMR (CDCl3,125 MHz)δ:34.7(C-1),30.5(C-2),66.4(C-3),36.9(C-4),82.1(C-5),135.4(C-6),130.1(C-7),79.4(C-8),51.1(C-9),36.9(C-10),20.6(C-11),39.3(C-12),44.5(C-13),51.7(C-14),23.4(C-15),28.6(C-16),56.2(C-17),12.8(C-18),18.2(C-19),39.7(C-20),20.9(C-21),135.2(C-22),132.3(C-23),42.7(C-24),33.0(C-25),19.6(C-26),19.9(C-27),17.5(C-28)。以上數(shù)據(jù)與文獻(xiàn)[11]報(bào)道一致,鑒定為5α,8α-epidioxyergosta-6,22-dien-3β-ol。

化合物10 無(wú)色針晶(EtOAc);ESI-MS m/z:427[M-H]-,分子式C29H48O2;1H NMR (CDCl3,300 MHz)δ:0.96(3H,s,H-19),0.93(3H,d,J=6.39 Hz,H-21),0.85(3H,t,J=7.32 Hz,H-29),0.84(3H,d,J=6.42 Hz,H-26),0.82(3H,d,J=6.79 Hz,H-27),0.70(3H,s,H-18);13C NMR (CDCl3,75 MHz)δ:38.1(C-1),39.4(C-2),209.0(C-3),37.0(C-4),57.5(C-5),211.1(C-6),46.6(C-7),37.4(C-8),53.5(C-9),41.2(C-10),21.7(C-11),38.0(C-12),43.0(C-13),56.0(C-14),24.0(C-15),28.0(C-16),56.6(C-17),12.5(C-18),12.0(C-19),36.0(C-20),18.7(C-21),33.8(C-22),26.1(C-23),45.8(C-24),29.2(C-25),19.8(C-26),19.0(C-27),23.0(C-28),12.0(C-29)。以上數(shù)據(jù)與文獻(xiàn)[12]報(bào)道一致,鑒定為stigmastan-3,6-dione。

化合物11 白色粉末(EtOAc);ESI-MS m/z:837[M+Na]+,分子式C51H90O7;1H NMR (CDCl3,500 MHz)δ:5.37(1H,m,H-6),4.37(1H,d,J=7.95 Hz,H-1'),2.36(3H,t,J=7.30 Hz,H-2''),1.00(3H,s,H-19),0.68(3H,s,H-18);13C NMR(CDCl3,125 MHz)δ:37.3(C-1),29.7(C-2),79.5(C-3),38.9(C-4),140.3(C-5),122.8(C-6),31.9(C-7),31.9(C-8),50.2(C-9),36.7(C-10),21.0(C-11),39.8(C-12),42.3(C-13),56.8(C-14),24.3(C-15),28.2(C-16),56.1(C-17),12.0(C-18),19.0(C-19),36.2(C-20),18.9(C-21),34.0(C-22),26.2(C-23),45.9(C-24),29.3(C-25),19.3(C-26),19.8(C-27),23.1(C-28),11.8(C-29),101.2(C-1'),73.6(C-2'),76.0(C-3'),70.1(C-4'),74.0(C-5'),63.2(C-6'),174.7(C-1'')。參照文獻(xiàn)[13]和質(zhì)譜數(shù)據(jù),鑒定為胡蘿卜苷-6'-棕櫚酸酯。

化合物12 白色蠟狀(EtOAc);ESI-MS m/z:893[M+Na]+,分子式C55H98O7;1H NMR (CDCl3,500 MHz)δ:5.36(1H,m,H-6),4.37(1H,d,J=7.95 Hz,H-1'),2.35(3H,t,J=7.35 Hz,H-2''),1.00(3H,s,H-19),0.68(3H,s,H-18);13C NMR(CDCl3,125 MHz)δ:37.3(C-1),29.7(C-2),79.5(C-3),38.9(C-4),140.3(C-5),122.1(C-6),31.9(C-7),31.9(C-8),50.2(C-9),36.7(C-10),21.1(C-11),39.8(C-12),42.3(C-13),56.8(C-14),24.3(C-15),28.2(C-16),56.1(C-17),12.0(C-18),19.0(C-19),36.1(C-20),18.8(C-21),34.0(C-22),26.2(C-23),45.9(C-24),29.3(C-25),19.3(C-26),19.8(C-27),23.1(C-28),11.8(C-29),101.2(C-1'),73.6(C-2'),76.0(C-3'),70.1(C-4'),74.0(C-5'),63.2(C-6'),174.7(C-1'')。參照文獻(xiàn)[14]和質(zhì)譜數(shù)據(jù),鑒定為胡蘿卜苷-6'-二十烷酸酯。

化合物13 無(wú)色顆粒(EtOAc);ESI-MS m/z:159[M+H]+,分子式C4H6N4O3;1H NMR (DMSOd6,500 MHz)δ:10.51(1H,s,H-1),8.03(H,s,H-3),6.88(H,s,H-6),5.76(1H,s,-NH2),5.24(s,H-5);13C NMR (DMSO-d6,125 MHz)δ:173.7(C-5),157.5(C-7),156.9(C-2),62.5(C-4)。以上數(shù)據(jù)與文獻(xiàn)[15]報(bào)道一致,鑒定為尿囊素。

化合物14 白色粉末(EtOH);ESI-MS m/z:136[M+H]+,分子式C5H5N5;1H NMR (DMSO-d6,300 MHz)δ:12.78(1H,s,NH),8.12(1H,s,H-2),8.10(1H,s,H-8),7.10(2H,s,NH2);13C NMR (DMSOd6,75 MHz)δ:152.6(C-2),151.5(C-4),155.5(C-6),139.5(C-8)。參照文獻(xiàn)[16]和質(zhì)譜數(shù)據(jù),鑒定為6-氨基嘌呤。

化合物15 白色粉末(EtOH);ESI-MS m/z:137[M+H]+,分子式C5H4N4O;1H NMR (DMSO-d6,300 MHz)δ:12.49(1H,s,NH),8.17(1H,s,H-8),7.97(1H,s,H-2);13C NMR (DMSO-d6,75 MHz)δ:144.8(C-2),153.4(C-4),119.4(C-5),155.6(C-6),140.4(C-8)。參照文獻(xiàn)[16]和質(zhì)譜數(shù)據(jù),鑒定為次黃嘌呤。

化合物16 黃色粉末(EtOAc);ESI-MS m/z:113[M +H]+,分子式C4H4N2O2;1H NMR (DMSO-d6,300 MHz)δ:10.99(1H,s,NH),10.80(1H,s,NH),7.38(1H,d,J=7.68 Hz,H-6),5.45(1H,d,J=7.68 Hz,H-5)。以上數(shù)據(jù)與文獻(xiàn)[17,18]報(bào)道一致,鑒定為尿嘧啶。

化合物17 白色蠟狀(Pet);ESI-MS m/z:307[M +Na]+,分子式C18H36O2;1H NMR (DMSO-d6,500 MHz)δ:11.65(1H,s,COOH),2.18(2H,t,J=7.35 Hz,H-2),1.26~1.51(30H,overlapped),0.87(3H,t,J=6.70 Hz,H-18)。參照文獻(xiàn)[19]和質(zhì)譜數(shù)據(jù),鑒定為硬脂酸。

化合物18 白色蠟狀(Pet);ESI-MS m/z:223[M +Na]+,分子式C12H24O2;1H NMR (DMSO-d6,300 MHz)δ:11.92(1H,s,COOH),2.19(2H,t,J=6.95 Hz,H-2),1.26-1.49(18H,overlapped),0.86(3H,t,H-12)。鑒定為十二烷酸。

化合物19 無(wú)色針晶(EtOAc);ESI-MS m/z:167[M-H]-,分子式C8H8O4;1H NMR (CDCl3,500 MHz)δ:7.72(1H,dd,J=8.25,1.80 Hz,H-6),7.59(1H,d,J=1.80 Hz,H-2),6.98(1H,d,J=8.25 Hz,H-5),3.97 (3H,s,-OCH3)。以上數(shù)據(jù)與文獻(xiàn)[20]報(bào)道一致,鑒定為香草酸。

化合物20 白色粉末(EtOAc);ESI-MS m/z:439[M-H]-,475[M+Cl]-,分子式C29H60O2;1H NMR (CD3OD,500 MHz)δ:3.80(2H,m,H-6,8),1.25~1.55(50H,m),0.89(6H,J=7.05 Hz,H-1,29);ESI-MS/MS m/z:421 [M-H2O]-,403 [M-2H2O]-,367[C24H47O2]-,323[C22H43O]-。以上數(shù)據(jù)與文獻(xiàn)[21]報(bào)道一致,鑒定為二十九烷二醇-6,8。

化合物21 白色粉末(EtOAc);ESI-MS m/z:439[M-H]-,475[M+Cl]-,分子式C29H60O2;1H NMR (CD3OD,500 MHz)δ:3.51(2H,m,H-6,10),1.25-1.59(50H,m),0.89(6H,J=9.75 Hz,H-1,29);ESI-MS/MS m/z:421 [M-H2O]-,403 [M-2H2O]-,367[C24H47O2]-,295[C20H39O]-。以上數(shù)據(jù)與文獻(xiàn)[21]報(bào)道一致,鑒定為二十九烷二醇-6,10。

化合物22 白色粉末(EtOAc);ESI-MS m/z:439[M-H]-,475[M+Cl]-,分子式C29H60O2;1H NMR (CD3OD,500 MHz)δ:3.52(2H,m,H-6,21),1.25~1.55(50H,m),0.89(6H,J=7.0 Hz,H-1,29);ESI-MS/MS m/z:421 [M-H2O]-,403 [M-2H2O]-,367[C24H47O2]-,295[C21H41O2]-。以上數(shù)據(jù)與文獻(xiàn)[21]報(bào)道一致,鑒定為二十九烷二醇-6,21。

化合物23 白色粉末(EtOAc);ESI-MS m/z:381[M-H]-,分子式C26H54O;1H NMR (CD3OD,500 MHz)δ:3.52(2H,t,7.0 Hz,H-1),1.25-1.55(48H,m),0.89(3H,J=7.1 Hz,H-25)。以上數(shù)據(jù)與文獻(xiàn)[22]報(bào)道一致,鑒定為二十六烷醇-1。

化合物24 白色粉末(EtOAc);ESI-MS m/z:241[M-H]-,分子式C16H34O;1H NMR (CD3OD,500 MHz)δ:3.58(2H,t,6.6 Hz,H-1),1.28-1.50(26H,m),0.89(3H,J=6.5 Hz,H-16)。以上數(shù)據(jù)與文獻(xiàn)[23]報(bào)道一致,鑒定為十六烷醇-1。

化合物25 白色粉末(EtOAc);ESI-MS m/z:353[M+H]+,分子式C25H52;1H NMR (CD3OD,300 MHz) δ:0.88 (6H,t,2CH3),1.28 (46H,23CH2)。以上數(shù)據(jù)與文獻(xiàn)[24]報(bào)道一致,鑒定為二十五烷。

化合物26 白色粉末(EtOAc);ESI-MS m/z:353[M+Na]+,分子式C19H38O4;1H NMR (CD3OD,500 MHz)δ:4.14(1H,dd,J=4.60,11.3 Hz,H-1a'),4.04(1H,dd,J=6.10,11.3 Hz,H-1b'),3.80(H,m,H-2'),3.54(2H,m,H-3'),2.33(2H,t,J=7.35,H-2),0.89(3H,t,J=6.70,H-19)。以上數(shù)據(jù)與文獻(xiàn)[25,26]報(bào)道一致,鑒定為單棕櫚酸甘油酯。

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