橙皮素的18個(gè)新席夫堿化合物制備及其結(jié)構(gòu)表征研究,應(yīng)用化學(xué)論文_第1頁(yè)
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橙皮素的18個(gè)新席夫堿化合物制備及其結(jié)構(gòu)表征研究,應(yīng)用化學(xué)論文橙皮苷和橙皮素是柑橘類(lèi)果皮的主要藥效成分。近年的研究表示清楚,二者在抗氧化和去除自由基、調(diào)節(jié)心血管系統(tǒng)功能、保衛(wèi)神經(jīng)系統(tǒng)、抗過(guò)敏、抗皮炎、抗菌抗癌及基因毒性等方面表現(xiàn)出較好的生物活性。席夫堿指由含有活潑羰基的化合物與含氨基的化合物通過(guò)縮水構(gòu)成的含碳氮雙鍵的亞氨基(RHCRN)R或烷亞氨基(RRCRN)R類(lèi)有機(jī)化合物。席夫堿中RCRNR雙鍵上的RNR原子有孤對(duì)電子,具有重要的化學(xué)與生物學(xué)意義,近年來(lái),對(duì)其在抗腫瘤、抗氧化和抗菌活性研究方面獲得了很大進(jìn)展。自由基是生物體生命活動(dòng)經(jīng)過(guò)中由機(jī)體生物化學(xué)反響所產(chǎn)生的中間產(chǎn)物,對(duì)機(jī)體的衰老和疾病、正常的免疫代謝和細(xì)胞信號(hào)傳導(dǎo)等經(jīng)過(guò)均起著重要作用。研究發(fā)現(xiàn)生物體的多種疾病均與自由基對(duì)機(jī)體的氧化損傷有關(guān)。因而,開(kāi)發(fā)能夠去除自由基的抗氧化劑成為醫(yī)藥生物學(xué)研究的熱門(mén)。本文從中藥陳皮中提取橙皮苷,酸水解制備橙皮素,然后分別與苯肼類(lèi)、苯甲酰肼類(lèi)、苯氨基脲類(lèi)、苯氨基硫脲類(lèi)、苯乙酰肼類(lèi)、苯氧乙酰肼類(lèi)和苯氨基乙酰肼類(lèi)等含氨基化合物縮合反響得到橙皮素的18R個(gè)新席夫堿化合物,根據(jù)RUV、IR、1HRNMR、MSR圖譜及元素分析對(duì)目的化合物的構(gòu)造進(jìn)行了表征,比擬了橙皮苷、橙皮素和橙皮素席夫堿去除超氧自由基(RO-2)R、羥自由基(OH)R和(RDPPH)R自由基的活性并測(cè)定了它們的總復(fù)原能力,為以橙皮黃酮為原料的新生物活性藥物的開(kāi)發(fā)和應(yīng)用提供了實(shí)驗(yàn)數(shù)據(jù)。1、R實(shí)驗(yàn)部分1.R1R儀器和試劑X-4R型顯微熔點(diǎn)測(cè)定儀(R北京泰克公司)R,溫度計(jì)未校正;RUV-2550R型紫外可見(jiàn)分光光度計(jì)(R日本島津公司)R;RVarioRELRcubeR型元素分析儀(R德國(guó)RElementarR公司)R;RFT-IRR6700R型紅外光譜儀(R美國(guó)RNicoletR公司)R,KBrR壓片;RAvanceRAVR400MHzR超導(dǎo)核磁共振儀(R德國(guó)RBrukerR公司)R,溶劑為RDMSO-d6;RDSQR型質(zhì)譜儀(R美國(guó)RThermoR公司)R。陳皮購(gòu)自本地市場(chǎng);R硅膠為青島海洋化工廠生產(chǎn);R二苯代苦味肼基自由基DPPH為RSigmaR產(chǎn)品;R苯肼類(lèi)、苯甲酰肼類(lèi)、苯氨基脲類(lèi)、苯氨基硫脲類(lèi)、苯乙酰肼類(lèi)、苯氧乙酰肼類(lèi)和苯氨基乙酰肼類(lèi)化合物均為自制;R其余試劑為國(guó)產(chǎn)化學(xué)純或分析純。1.R2R橙皮素席夫堿衍生物的制備橙皮苷的提取和分離純化以下為參考文獻(xiàn)方式方法進(jìn)行。所得橙皮苷為白色片狀結(jié)晶,產(chǎn)率為R1.R3%,mp為R260R~262R℃,微溶于甲醇、乙醇,易溶于二甲亞砜、N,N-二甲基甲酰胺,其鹽酸-鎂粉實(shí)驗(yàn)為紅色,1%AlCl3實(shí)驗(yàn)為黃色,10%KOHR實(shí)驗(yàn)為黃色。橙皮素的制備以下為參考文獻(xiàn)方式方法進(jìn)行。所得橙皮素為淡黃色針狀結(jié)晶,產(chǎn)率為R52.R1%,mpR為R224R~226R℃R,不溶于石油醚,易溶于甲醇、乙醇,鹽酸-鎂粉實(shí)驗(yàn)為紅色,1%RAlCl3實(shí)驗(yàn)為黃色,10%RKOHR實(shí)驗(yàn)為黃色。橙皮素席夫堿衍生物的制備:R將R1RmmolR橙皮素和R1.R1RmmolR含氨基化合物溶于R20RmLR無(wú)水乙醇中并滴加少量冰醋酸或R1R滴濃鹽酸,混合液攪拌回流R24R~60Rh,薄層層析檢測(cè)反響進(jìn)程,得棕黃色溶液,減壓除去部分乙醇,有黃色固體析出,抽濾,蒸餾水洗滌固體,再用少量乙醇洗滌,室溫晾干,無(wú)水乙醇/二甲亞砜重結(jié)晶,得到相應(yīng)的橙皮素席夫堿類(lèi)化合物。合成道路如RSchemeR1R所示。1.R3R去除自由基活性實(shí)驗(yàn)橙皮苷、橙皮素及其席夫堿類(lèi)衍生物去除自由基活性試驗(yàn)以下為參考文獻(xiàn)方式方法進(jìn)行,華而不實(shí)羥自由基由RFe2R+-H2O2-亞甲藍(lán)體系產(chǎn)生,超氧自由基采用堿性條件下鄰苯三酚的自氧化產(chǎn)生,DPPH自由基直接用無(wú)水乙醇配制使用,復(fù)原能力測(cè)定采用鐵氰化鉀復(fù)原法。試樣為濃度R1.R0Rg/LR的二甲亞砜溶液。2、R結(jié)果與討論2.R1R橙皮素席夫堿衍生物的構(gòu)造表征橙皮素對(duì)氯苯腙(R1a)R:R棕黃色粉末,產(chǎn)率R19.R7%,mpR232R~R234R℃,不溶于石油醚,易溶于甲醇、乙醇,鹽酸-鎂粉實(shí)驗(yàn)為紅色,1%AlCl3實(shí)驗(yàn)為黃褐色,10%KOHR實(shí)驗(yàn)為黃褐色。UV(RDMSO)R,max/Rnm:R339,297;REI-MS(RmR/Rz,%R)R:R426(RM+,3.R36)R,411(R3.R12)R,300(R4.R25)R,179(R33.R17)R,137(R100)R,107(R19.R12)R,77(R24.R03)R;1HRNMR(RDMSO-d6)R,:R2.R72(Rdd,JR=R2.R80,17.R10RHz,1H,3-HRcis)R,3.R04(Rdd,JR=R12.R70,17.R09Hz,1H,3-HRtrans)R,3.R86(Rs,3H,4-OCH3)R,5.R29(Rdd,JR=R2.R72,12.R52RHz,1H,2-H)R,5.R61(Rs,1H,3-OH)R,5.R90(Rs,2H,6,8-H)R,6.R89R~R6.R95(Rm,3H,2,5,6-H)R,7.R22R(Rd,JR=R8.R77RHz,2H,2,6-H)R,7.R57R(Rd,JR=8.R81RHz,2H,3,5-H)R,9.R38R(Rs,1H,7-OH)R,10.R05R(Rs,1H,NH)R,12.R05R(Rs,1H,5-OH)R;RIRR(RKBr)R,R/cm-R1:3497、3446(ROH)R,3326(RNH)R,2915,1608(RCRN)R,1587,1539,1515,1445;RC22H19ClN2O5元素分析(R計(jì)算值)R/%:RCR60.R03(R61.R90)R,HR4.R59(R4.R46)R,NR6.R71(R6.R57)R。橙皮素對(duì)氯苯甲酰腙(R2a)R:R棕黃色粉末,產(chǎn)率R37.R8%,mpR246R~R248R℃,不溶于石油醚,易溶于甲醇、乙醇,鹽酸-鎂粉實(shí)驗(yàn)為紅色,1%RAlCl3實(shí)驗(yàn)為黃褐色,10%RKOHR試驗(yàn)為黃褐色。UV(RDMSO)R,max/Rnm:R351,307;REI-MS(RmR/Rz,%R)R:R454(RM+,3.R04)R,436(R23.R45)R,297(R69.R16)R,185(R23.R79)R,139(R100)R,111(R32.R19)R,77(R9.R45)R;1HRNMR(RDMSO-d6)R,:R2.R77(Rdd,JR=2.R90,17.R08RHz,1H,3-HRcis)R,3.R07(Rdd,JR=12.R71,17.R09RHz,1H,3-HRtrans)R,3.R70R(Rs,3H,4-OCH3)R,5.R32(Rdd,JR=R2.R75,12.R52RHz,1H,2-H)R,5.R64(Rs,1H,3-OH)R,5.R89(Rs,2H,6,8-H)R,6.R92R~R7.R05(Rm,3H,2,5,6-H)R,7.R24(Rd,JR=R8.R82RHz,2H,2,6-H)R,7.R59(Rd,JR=R8.R86RHz,2H,3,5-H)R,9.R40(Rs,1H,7-OH)R,10.R25(Rs,1H,NH)R,12.R05(Rs,1H,5-OH)R;IR(RKBr)R,R/Rcm-R1:R3495、3450(ROH)R,3331(RNH)R,2925,1610(RCRN)R,1543,1520,1465;RC23H19ClN2O6元素分析(R計(jì)算值)R/%:RCR59.R93(R60.R73)R,HR4.R39(R4.R18)R,NR6.R71(R6.R16)R。橙皮素對(duì)羥基苯甲酰腙(R2b)R:R淡黃色粉末,產(chǎn)率42.R66%,mpR>300R℃。1HRNMR(RDMSO-d6)R,:R2.R96(Rdd,JR=R5.R08,12.R16RHz,1H,3-HRcis)R,3.R42(Rdd,JR=R12.R04,17.R28RHz,1H,3-HRtrans)R,3.R78(Rs,3H,4-OCH3)R,5.R10(Rdd,JR=R2.R68,9.R24RHz,1H,2-H)R,5.R64(Rs,1H,3-OH)R,5.R90(Rs,1H,6-H)R,5.R93(Rs,1H,PhOH)R,5.R97R(Rs,1H,8-H)R,6.R84R~R7.R82R(Rm,7H,PhH)R,9.R42R(Rs,1H,7-OH)R,10.R99R(Rs,1H,NH)R,13.R11(Rs,1H,5-OHR)R;RIRR(RKBrR)R,R/Rcm-R1:R3508R(ROH)R,3339R(RNH)R,2939,2843,1654R(RCRO)R,1606(RCRN)R,1503,1480,1270,1173,1077,838。橙皮素對(duì)硝基苯甲酰腙(R2c)R:R黃色粉末,產(chǎn)率R15.R05%,mpR>300R℃。1HRNMR(RDMSO-d6)R,:R3.R07(Rdd,JR=R5.R24,11.R88RHz,1H,3-HRcis)R,3.R45(Rdd,JR=R12.R02,17.R32RHz,1H,3-HRtrans)R,3.R79(Rs,3H,4-OCH3)R,5.R19(Rdd,JR=R2.R84,8.R94RHz,1H,2-H)R,5.R69(Rs,1H,3-OH)R,5.R91(Rs,1H,6-H)R,5.R93(Rs,1H,8-H)R,6.R86R~R7.R41R(Rm,7H,PhH)R,9.R07R(Rs,1H,7-OH)R,10.R26R(Rs,1H,NH)R,12.R87R(Rs,1H,5-OH)R;RIR(RKBr)R,/cm-R1:R3378(ROH)R,3299(RNH)R,2938,2845,2641,1629(RCRO)R,1596(RCRN)R,1516,1461,1275,1156,1078,1023,835。橙皮素間甲基苯甲酰腙(R2d)R:R黃色粉末,產(chǎn)率R15.R21%,mpR>R300R℃。1HRNMR(RDMSO-d6)R,:R1.R07(Rs,3H,-CH3)R,3.R07(Rdd,JR=5.R24,11.R88RHz,1H,3-HRcis)R,3.R46(Rdd,JR=12.R70,17.R12RHz,1H,3-HRtrans)R,3.R79(Rs,3H,4-OCH3)R,5.R19(Rdd,JR=R2.R80,8.R8RHz,1H,2-H)R,5.R68(Rs,1H,3-OH)R,5.R90(Rs,1H,6-H)R,5.R91(Rs,1H,8-H)R,6.R86R~R7.R35(Rm,7H,PhH)R,9.R12(Rs,1H,7-OH)R,10.R24(Rs,1H,NH)R,12.R87(Rs,1H,5-OH)R;RIRR(RKBr)R,R/Rcm-R1:R3300(ROH)R,3287(RNH)R,2961,2936,2841,1635(RCRO)R,1597(RCRNRN)R,1515,1462,1278,1157,1080,1019,813。橙皮素苯氨基脲腙(R3a)R:R黃色粉末,產(chǎn)率R19.R77%,mpR>R300R℃。1HRNMR(RDMSO-d6)R,:R3.R07(Rdd,JR=R4.R44,12.R32RHz,1H,3-HRcis)R,3.R30(Rdd,JR=R12.R71,17.R10RHz,1H,3-HRtrans)R,3.R79(Rs,3H,4-OCH3)R,5.R19(Rdd,JR=R2.R83,8.R90RHz,1H,2-H)R,5.R62(Rs,1H,3-OH)R,5.R91(Rs,2H,6-H,8-H)R,6.R87R~R7.R50(Rm,8H,PhH)R,8.R76(Rs,1H,NH)R,9.R12(Rs,1H,7-OH)R,10.R24(Rs,1H,NH)R,12.R87(Rs,1H,5-OH)R;RIR(RKBr)R,R/cm-R1:R3405(ROH)R,3231(RNH)R,2956,2834,1858,1662(RCRO)R,1595(RCRN)R,1533,1516,1441,1386,1279,1156,1088,1028,823。橙皮素對(duì)甲基苯氨基脲腙(R3b)R:R黃色粉末,產(chǎn)率16.R84%,mpR>300R℃。1HRNMR(RDMSO-d6)R,:R1.R12(Rs,3H,CH3)R,3.R07(Rdd,JR=R3.R45,12.R52RHz,1H,3-HRcis)R,3.R30(Rdd,JR=R12.R69,17.R08RHz,1H,3-Htrans)R,3.R79(Rs,3H,4-OCH3)R,5.R19(Rdd,JR=2.R91,9.R06RHz,1H,2-H)R,5.R71(Rs,1H,3-OH)R,5.R91(Rs,2H,6-H,8-H)R,6.R86R~R7.R37R(Rm,7H,PhH)R,8.R64R(Rs,1H,NH)R,9.R10R(Rs,1H,7-OH)R,10.R24R(Rs,1H,NH)R,12.R87(Rs,1H,5-OHR)R;RIRR(RKBrR)R,R/Rcm-R1:R3409R(ROH)R,3298、3225R(RNH)R,2917,1670R(RCRO)R,1600(RCRN)R,1551,1516,1451,1332,1243,822。橙皮素對(duì)氯苯氨基脲腙(R3c)R:R黃色粉末,產(chǎn)率R21.R73%,mpR>R300R℃。EI-MS(Rm/z,%)R:R469(RM+,0.R36)R,211R(R7.R02R)R,185R(R14.R35R)R,153R(R100R)R,127R(R54.R32R)R,111R(R13.R12R)R,99R(R19.R88R)R,90R(R47.R31R)R,75(R17.R23)R,63(R32.R15)R,55(R9.R01)R;1HRNMR(RDMSO-d6)R,:R3.R07(Rdd,JR=5.R12,11.R92RHz,1H,3-HRcis)R,3.R44(Rdd,JR=12.R70,16.R96RHz,1H,3-HRtrans)R,3.R79(Rs,3H,4-OCH3)R,5.R19(Rdd,JR=2.R48,9.R00RHz,1H,2-H)R,5.R65(Rs,1H,3-OH)R,5.R91(Rs,2H,6,8-H)R,6.R87R~R7.R55(Rm,7H,PhH)R,8.R79(Rs,1H,NH)R,9.R11(Rs,1H,7-OH)R,10.R24(Rs,1H,NH)R,12.R87R(Rs,1H,5-OH)R;RIRR(RKBr)R,,R/Rcm-R1:R3397(ROH)R,3299、3224(RNH)R,2999,2958,1671R(RCROR)R,1596R(RCRNR)R,1536,1442,1360,1242,825;RC23H20ClN3O6元素分析(R計(jì)算值)R/%:RCR59.R03(R58.R79)R,HR4.R59(R4.R26)R,NR8.R71R(R8.R95)R。橙皮素苯氨基硫脲腙(R4a)R:R黃色粉末,產(chǎn)率R21.R29%,mpR>R300R℃。1HRNMRR(RDMSO-d6)R,:R3.R07(Rdd,JR=R5.R10,12.R21RHz,1H,3-HRcis)R,3.R41(Rdd,JR=R12.R69,17.R08RHz,1H,3-HRtrans)R,3.R79(Rs,3H,4-OCH3)R,5.R18(Rdd,JR=3.R03,9.R20RHz,1H,2-H)R,5.R71(Rs,1H,3-OH)R,5.R91(Rs,2H,6-H,8-H)R,6.R87R~R7.R43(Rm,8H,PhH)R,8.R74(Rs,1H,NH)R,9.R11(Rs,1H,7-OH)R,10.R24(Rs,1H,NH)R,12.R87(Rs,1H,5-OH)R;RIR(RKBr)R,/cm-R1:R3410(ROH)R,3295、3221(RNH)R,2955,2835,1597(RCRN)R,1555,1500,1446,1242,1156,1087,757。橙皮素對(duì)甲基苯氨基硫脲腙(R4b)R:R黃色粉末,產(chǎn)率R32.R26%,mpR>R300R℃。1HRNMR(RDMSO-d6)R,:1.R07(Rs,3H,CH3)R,3.R07(Rdd,JR=R5.R08,12.R13RHz,1H,3-HRcis)R,3.R40(Rdd,JR=R12.R71,17.R38RHz,1H,3-Htrans)R,3.R79(Rs,3H,4-OCH3)R,5.R20(Rdd,JR=2.R92,8.R94RHz,1H,2-H)R,5.R67(Rs,1H,3-OH)R,5.R90(Rs,2H,6-H,8-H)R,6.R85R~R7.R34R(Rm,7H,PhH)R,8.R71R(Rs,1H,NH)R,9.R11R(Rs,1H,7-OH)R,10.R24R(Rs,1H,NH)R,12.R87(Rs,1H,5-OH)R;RIR(RKBr)R,R/Rcm-R1:R3408(ROH)R,3229(RNH)R,2956,2834,1596(RCRN)R,1569,1532,1442,1278,1191(RCRSR)R,1088,823。橙皮素對(duì)氯苯氨基硫脲腙(R4c)R:R黃色粉末,產(chǎn)率R32.R96%,mpR>R300R℃。EI-MS(Rm/z,%)R:R450(R13.R65)R,300(R62.R15)R,285(R33.R72)R,178(R100)R,150(R38.R24)R,137(R79.R05)R,107(R51.R23)R,77(R43.R55)R,55(R58.R03)R;1HRNMRR(RDMSO-d6)R,:R3.R07R(Rdd,JR=R5.R03,12.R12RHz,1H,3-HRcis)R,3.R42R(Rdd,JR=R12.R08,17.R26RHz,1H,3-HRtrans)R,3.R79(Rs,3H,4-OCH3)R,5.R19(Rdd,JR=2.R88,9.R70RHz,1H,2-H)R,5.R75(Rs,1H,3-OH)R,5.R89(Rs,2H,6,8-H)R,6.R86R~R7.R31(Rm,7H,PhH)R,7.R89(Rs,1H,NH)R,9.R11(Rs,1H,7-OH)R,10.R24(Rs,1H,NH)R,12.R87R(Rs,1H,5-OH)R;RIRR(RKBr)R,/cm-R1:R3408R(ROH)R,3205R(RNH)R,2999,2956,1596(RCRNN)R,1568,1441,1243,823;RC23H20ClN3O5SR元素分析R(R計(jì)算值)R/R%R:RCR56.R42R(R56.R85R)R,HR4.R65(R4.R12)R,NR8.R95(R8.R65)R。橙皮素苯乙酰腙(R5a)R:R黃色粉末,產(chǎn)率36.R41%,mpR>300R℃。EI-MS(Rm/z,%)R:R434(RM+,2.R97)R,300(R52.R66)R,285(R22.R59)R,150(R32.R63)R,137(R47.R30)R,107(R46.R97)R,91(R45.R50)R,77(R46.R20)R,55(R75.R99)R;1HRNMR(RDMSO-d6,400RMHz)R,:R3.R06R(Rdd,JR=R2.R87,17.R01RHz,1H,3-HRcis)R,3.R45R(Rdd,JR=R8.R18,11.R36RHz,1H,3-HRtrans)R,3.R62(Rs,2H,CH2)R,3.R78(Rs,3H,4-OCH3)R,5.R19(Rdd,JR=R2.R12,9.R43RHz,1H,2-H)R,5.R67(Rs,1H,3-OH)R,5.R91(Rs,2H,6,8-H)R,6.R87R~R7.R28(Rm,8H,PhH)R,9.R10(Rs,1H,7-OH)R,10.R24(Rs,1H,NH)R,12.R87R(Rs,1H,5-OH)R;RIRR(RKBr)R,/cm-R1:R3409R(ROH)R,3232R(RNH)R,2999,2956,1660(RCRO)R,1596(RCRN)R,1569,1532,1441,1387,1028,823;RC24H22N2O6元素分析(R計(jì)算值)R/%:RCR66.R17(R66.R36)R,HR5.R35(R5.R07)R,NR6.R72(R6.R45)R。橙皮素對(duì)硝基苯乙酰腙(R5b)R:R黃色粉末,產(chǎn)率R25.R05%,mpR300R℃。1HRNMR(RDMSO-d6,400RMHz)R,:R3.R07(Rdd,JR=R2.R65,16.R98RHz,1H,3-HRcis)R,3.R32(Rdd,JR=R7.R63,12.R11RHz,1H,3-HRtrans)R,3.R67(Rs,2H,CH2)R,3.R79(Rs,3H,4-OCH3)R,5.R19(Rdd,JR=R2.R82,10.R23RHz,1H,2-H)R,5.R76(Rs,1H,3-OH)R,5.R91(Rs,2H,6,8-H)R,6.R86R~R7.R21R(Rm,7H,PhH)R,9.R11R(Rs,1H,7-OH)R,10.R23R(Rs,1H,NH)R,12.R86R(Rs,1H,5-OH)R;RIR(RKBr)R,R/Rcm-R1:R3401(ROH)R,3297(RNH)R,2999,2956,2835,1665(RCRO)R,1595(RCRN)R,1568,1533,1442,1360,1087,824。橙皮素萘乙酰腙(R5c)R:R黃色粉末,產(chǎn)率R17.R35%,mpR>R300R℃。1HRNMRR(RDMSO-d6,400RMHz)R,:3.R07(Rdd,JR=R5.R16,11.R92RHz,1H,3-HRcis)R,3.R34R(Rs,2H,-CH2)R,3.R45(Rdd,JR=R12.R70,17.R12RHz,1H,3-Htrans)R,3.R79(Rs,3H,4-OCH3)R,5.R19(Rdd,JR=2.R56,8.R96RHz,1H,2-H)R,5.R72(Rs,1H,3-OH)R,5.R91(Rs,2H,6,8-H)R,6.R87R~R7.R52(Rm,10H,ArH)R,9.R11R(Rs,1H,7-OH)R,10.R24R(Rs,1H,NH)R,12.R87R(Rs,1H,5-OH)R;RIR(RKBr)R,/cm-R1:R3399(ROH)R,3287(RNH)R,2956,1660(RCRO)R,1597(RCRN)R,1516,1443,1357,1243,1026,822。橙皮素苯氧乙酰腙(R6a)R:R黃色粉末,產(chǎn)率R38.R8%,mpR>300R℃。EI-MS(Rm/z,%)R:R450(RM+,12.R37)R,314(R14.R08)R,300(R71.R96)R,285(R32.R23)R,178(R81.R33)R,150(R42.R09)R,137(R100)R,107(R33.R17)R,69(R80.R06)R,55(R57.R88)R;1HRNMR(RDMSO-d6,400RMHz)R,:R2.R50(Rdd,JR=R2.R90,17.R05RHz,1H,3-HRcis)R,3.R06(Rdd,JR=7.R88,11.R04RHz,1H,3-HRtrans)R,3.R31R(Rs,2H,CH2O)R,3.R78R(Rs,3H,4-OCH3)R,5.R18R(Rdd,JR=R2.R42,9.R24RHz,1H,2-H)R,5.R72(Rs,1H,3-OH)R,5.R88(Rs,2H,6,8-H)R,6.R87R~R7.R03(Rm,3H,2,5,6-H)R,6.R92(Rm,3H,ArH)R,6.R97R(Rm,2H,ArH)R,9.R06R(Rs,1H,7-OH)R,10.R21R(Rs,1H,NH)R,12.R85R(Rs,1H,5-OH)R;RIR(RKBr)R,/cm-R1:R3404(ROH)R,3240(RNH)R,2997,2955,1664(RCRO)R,1596(RCRN)R,1532,1516,1440,1218,1028,824;RC24H22N2O7元素分析(R計(jì)算值)R/%:RCR63.R27(R63.R98)R,HR4.R53(R4.R89)R,NR6.R84(R6.R22)R。橙皮素-(R2,4-二氯)R苯氧乙酰腙(R6b)R:R黃色粉末,產(chǎn)率R41.R22%,mpR>R300℃;1HRNMRR(RDMSO-d6,400RMHz)R,:R3.R07(Rdd,JR=R5.R16,11.R96RHz,1H,3-HRcis)R,3.R46(Rdd,JR=R12.R71,17.R70RHz,1H,3-HRtrans)R,3.R79(Rs,3H,4-OCH3)R,4.R85(Rs,2H,CH2O)R,5.R19R(Rdd,JR=R2.R76,8.R84RHz,1H,2-H)R,5.R63R(Rs,1H,3-OH)R,5.R91(Rs,2H,6,8-H)R,6.R87R~R7.R61(Rm,6H,PhH)R,9.R11(Rs,1H,7-OH)R,10.R25(Rs,1H,NH)R,12.R87(Rs,1H,5-OH)R;RIR(RKBr)R,/cm-R1:R3399(ROH)R,3221(RNH)R,2998,2956,1667(RCRO)R,1594(RCRN)R,1533,1442,1243,1027,823。橙皮素苯氨基乙酰腙(R7a)R:R黃色粉末,產(chǎn)率R41.R43%,mpR>300R℃。1HRNMR(RDMSO-d6,400RMHz)R,:R3.R06(Rdd,JR=R2.R81,17.R02RHz,1H,3-HRcis)R,3.R32R(Rdd,JR=R11.R27,16.R32RHz,1H,3-HRtrans)R,3.R68R(Rs,2H,CH2)R,3.R79(Rs,3H,4-OCH3)R,4.R33(Rs,1H,NH)R,5.R20(Rdd,JR=R2.R98,12.R59RHz,1H,2-H)R,5.R70(Rs,1H,3-OH)R,5.R90(Rs,2H,6,8-H)R,6.R86R~R7.R18(Rm,8H,PhH)R,9.R11(Rs,1H,7-OH)R,10.R24(Rs,1H,NH)R,12.R87(Rs,1H,5-OH)R;RIR(RKBr)R,/cm-R1:R3407(ROH)R,3227(RNH)R,2998,2956,1660(RCRO)R,1596(RCRN)R,1516,1441,1260,1087,823。橙皮素對(duì)甲基苯氨基乙酰腙(R7b)R:R黃色粉末,產(chǎn)率R18.R57%,mpR>R300R℃。EI-MS(Rm/z,%)R:R463(RM+,4.R09)R,434(R17.R06)R,312(R13.R07)R,300(R67.R10)R,285(R37.R87)R,178(R100)R,150(R49.R11)R,137(R91.R97)R,107(R61.R00)R,91(R42.R96)R,77(R53.R72)R,69(R67.R92)R,55(R38.R93)R;1HRNMR(RDMSO-d6,400RMHz)R,:R1.R50(Rs,3H,CH3)R,3.R07(Rdd,JR=2.R85,17.R05RHz,1H,3-HRcis)R,3.R45(Rdd,JR=R12.R72,17.R10RHz,1H,3-HRtrans)R,3.R65(Rs,2H,CH2)R,3.R78(Rs,3H,4-OCH3)R,4.R30(Rs,1H,NH)R,5.R18(Rdd,JR=R2.R72,12.R50RHz,1H,2-H)R,5.R69(Rs,1H,3-OH)R,5.R90R(Rs,2H,6,8-H)R,6.R87R~R7.R13R(Rm,7H,PhH)R,9.R11R(Rs,1H,7-OH)R,10.R25(Rs,1H,NH)R,12.R87R(Rs,1H,5-OH)R;RIRR(RKBr)R,/cm-R1:R3401R(ROH)R,3222R(RNH)R,2998,2955,1661(RCRO)R,1597R(RCRN)R,1532,1441,1243,1027,822;RC25H25N3O6元素分析(R計(jì)算值)R/%:RCR64.R32(R64.R80)R,HR5.R14(R5.R40)R,NR9.R25(R9.R07)R。測(cè)定了橙皮苷、橙皮素和化合物R1a、2aR的紫外光譜,在紫外光譜中Ⅰ帶(R300R~R400Rnm)R和Ⅱ帶(R240R~285Rnm)R是黃酮類(lèi)化合物的2R個(gè)主要吸收帶,測(cè)定結(jié)果能夠看出化合物1a、2aR的Ⅰ帶及Ⅱ帶均發(fā)生紅移,證明構(gòu)成了席夫堿。測(cè)定了橙皮苷、橙皮素和R18R個(gè)橙皮素席夫堿的紅外光譜,從譜圖中能夠看到母體化合物的RCRO吸收峰消失,代之出現(xiàn)了席夫堿RCRN吸收峰。測(cè)定了化合物R1a、2a、3c、4c、5a、6aR和R7bR的質(zhì)譜,從圖中能夠看到化合物的分子離子峰較弱,其它的離子峰能夠得到較好的解釋。測(cè)定了R18R個(gè)橙皮素席夫堿的核磁共振氫譜,能與構(gòu)造較好吻合。對(duì)化合物R1a、2a、3c、4c、5a、6aR和R7bR進(jìn)行了元素分析,結(jié)果與理論值能較好吻合。通過(guò)化合物的紫外吸收光譜、紅外光譜、1HRNMRR和RMSR圖譜,能夠確定生成的衍生物是目的化合物。2.R2R化合物的抗氧化活性近年來(lái),人們普遍以為生命經(jīng)過(guò)中氧化代謝反響產(chǎn)生的各種過(guò)量自由基與很多疾病,如腫瘤、炎癥和衰老等密切相關(guān),因而尋找低毒或無(wú)毒的抗氧化物質(zhì)已成為熱門(mén)研究課題。本文測(cè)定了橙皮苷、橙皮素及席夫堿新化合物去除超氧自由基(RO-2)R、羥自由基(OH)R和R2,2-二苯基-1-苦味酰基自由基(RDPPH)R的活性及總復(fù)原能力。實(shí)驗(yàn)經(jīng)過(guò)中選用了多個(gè)濃度,結(jié)果發(fā)現(xiàn)低濃度時(shí),去除自由基效果較弱,而高濃度時(shí)化合物在測(cè)定體系中的溶解度小,去除自由基效果也較弱,下面比擬了濃度為R1.R0Rg/L時(shí)各化合物的抗氧化活性,結(jié)果列于表R1。從表R1R能夠看出,在R1.R0Rg/LR時(shí),橙皮苷、橙皮素及其席夫堿新化合物均具有去除自由基活性,并且部分席夫堿化合物作用強(qiáng)于橙皮苷和橙皮素,華而不實(shí)橙皮素對(duì)甲基苯氨基乙酰腙(R化合物R7b)R對(duì)RDPPH自由基去除活性較強(qiáng),去除率為R92.R66%;R橙皮素對(duì)氯苯甲酰腙(R化合物R2a)R去除羥自由基(OH)R及超氧自由基(RO-2)R作用均較強(qiáng),去除率分別為R72.R01%R和R81.R61%;R橙皮素對(duì)氯苯甲酰腙(R化合物R2a)R總復(fù)原能力較強(qiáng),其抗氧化活性均強(qiáng)于橙皮苷和橙皮素,詳細(xì)規(guī)律和作用機(jī)理尚待進(jìn)一步研究。3、R結(jié)R論從中藥陳皮中提取精制橙皮苷,通過(guò)酸水解制備橙皮素,再分別與R7R種類(lèi)型的含氨基化合物在酸催化下縮合反響得到18R個(gè)相應(yīng)的橙皮素席夫堿衍生物,用RUV、IR、1HRNMR、MSR及元素分析等技術(shù)手段對(duì)構(gòu)造進(jìn)行了表征,比擬了橙皮苷、橙皮素和這些橙皮素席夫堿衍生物去除超氧自由基(RO-2)R、羥自由基(OH)R和RDPPH自由基的活性。結(jié)果表示清楚,橙皮苷、橙皮素和橙皮素席夫堿衍生物均具有去除自由基活性,并且部分席夫堿化合物作用強(qiáng)于橙皮苷和橙皮素,華而不實(shí)橙皮素對(duì)甲基苯氨基乙酰腙(R化合物R7b)R對(duì)DPPH自由基去除活性較強(qiáng),橙皮素對(duì)氯苯甲酰腙R(R化合物R2a)R對(duì)羥自由基R(ROH)R和超氧自由基(RO-2)R去除作用及總復(fù)原能力均較強(qiáng),值得進(jìn)一步研究開(kāi)發(fā)。參考文獻(xiàn)[1]ChoiEM,KimYH.HesperetinAttenuatestheHighlyReducingSugar-triggeredInhibitionofOsteoblastDifferentiation[J].CellBiolToxicol,2008,24(3):225-231.[2]OralloF,AlvarezE,BasaramH,etal.ComparativeStudyoftheVasorelaxantActivity,Superoxide-scavengingAbilityandCyclicNucleotidePhosphodiesterase-inhibitoryEffectsofHesperetinandHesperidin[J].NaunynSchmiedebergsArchPharmacol,2004,370(6):452-463.[3]KumarP,KumarA.ProtectiveEffectofHesperi

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