CN103601672B - 一种类姜黄素及其制备方法和应用 - Google Patents

一种类姜黄素及其制备方法和应用 Download PDF

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CN103601672B
CN103601672B CN201310536504.0A CN201310536504A CN103601672B CN 103601672 B CN103601672 B CN 103601672B CN 201310536504 A CN201310536504 A CN 201310536504A CN 103601672 B CN103601672 B CN 103601672B
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curcuminoids
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CN103601672A (zh
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赵瑞峰
胡静
李峰
叶荣飞
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China Tobacco Guangdong Industrial Co Ltd
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    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D213/00Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/60Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
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Abstract

本发明公开了一种类姜黄素及其制备方法和应用。所述的类姜黄素的结构式如(I)所示,(I);其中,R1为‑O‑R5、‑H或‑OH;R2为‑OH或‑H;R3为C1~5的烷基、‑COO‑R5或H;R4为C1~5的烷基、‑COO‑R5、‑COOH或‑(CH3)n‑Ph;R5为C1~5的烷基。本发明对设计合成路线科学合理设计,制备得到的类姜黄素具有很强的抗氧化、抑制自由基的形成和清除自由基的能力,应用于香烟烟丝中,能够起到抑制和清除自由基的作用,减少吸烟对人体带来的危害。

Description

一种类姜黄素及其制备方法和应用
技术领域
本发明涉及化合物合成制备技术领域和烟草技术领域,具体涉及一种抗氧化剂,更具体地,涉及一种类姜黄素及其制备方法和应用。
背景技术
众所周知,吸烟对人体有害。吸烟会引起一些可怕的疾病,如支气管和肺部疾病和心血管疾病,但是仍有许多人吸烟。
过去人们一直认为吸烟的毒性来自尼古丁,但它并不是吸烟的唯一毒性物质。吸烟的过程是一个复杂的燃烧过程,在吸烟产生的气相物质和焦油中存在着大量的自由基,可以直接或间接地攻击人体组织而引起各种疾病。
正常状况下,人体内产生的自由基可以靠自身作用而清除掉,所以自由基的产生和清除处于平衡状态。但是当人体受到外来较多自由基的攻击时,自由基的产生和清除代谢平衡被打破,出现氧应激,导致人体内的组织损伤,引起疾病。
如果能够通过在卷烟中添加一些能有效阻止自由基形成的物质,在烟气中就能够减少自由基的形成量。当所添加的物质挥发,随烟气吸进入人体,协助人体内维持自由的代谢平衡,对于防止人体发生疾病和保持身体健康将十分有益。
发明内容
本发明的目的是针对抑制卷烟给人体带来的自由基物质的技术不足,提供一种可抑制香烟中有害物质的抗氧化剂,具有清除自由基以抑制有害物质的形成,达到减害之目的。
本发明的另一个目的是提供所述抗氧化剂的制备方法。
本发明还有一个目的是提供所述抗氧化剂在卷烟中的应用。
本发明的目的通过以下技术方案予以实现:
提供一种类姜黄素,所述的类姜黄素的结构式如式(I)所示,
(I)
其中,R1为-O-R5、-H或-OH;
R2为-OH或-H;
R3为C1~5的烷基、-COO-R5或H;
R4为C1~5的烷基、-COO-R5、-COOH或-(CH3)n-Ph;
R5为C1~5的烷基;
所述的R5优选为甲基、乙基或丙基。
所述的R3优选为甲基、乙基或丙基。
本发明提供上述的类姜黄素在制备卷烟自由基清除剂中的应用。
尤以以下结构式如式(Ⅱ)、(Ⅲ)、(Ⅳ)、(Ⅴ)、(Ⅵ)、(Ⅶ)或(Ⅷ)所示的类姜黄素在制备卷烟自由基清除剂中具有更好的应用:
式(Ⅱ)、
式(Ⅲ)、
式(Ⅳ)、
式(Ⅴ)、
式(Ⅵ)、
式(Ⅶ)、
或式(Ⅷ)。
所述应用于卷烟清除自由基的类姜黄素可以根据其结构式结合本技术领域合成原理采用其他方法制备得到;本发明同时提供了一种优选的上述的类姜黄素的制备方法,合成路线如下:
其中中的R为R1 、R2和 R3,R1为-O-R5、-H或-OH;
R2为-OH或-H;R3为C1~5的烷基、-COO-R5或H;
R4为C1~5的烷基、-COO-R5、-COOH或-(CH3n-Ph;
R5为C1~5的烷基。
本发明方法包括以下步骤:
S1.在反应容器中以1:2.1的摩尔比先加入4-取代哌啶酮和羟基苯甲醛,然后加入适量乙酸-氯化氢溶液;室温下搅拌使溶解,静置;
S2.将S1所得反应混合物倒入水溶液中,中和至中性,过滤得到固体产物,S3.固体产物研磨后,加入甲醇进行超声震荡,洗涤除去残余原料和其他杂
质,过滤、干燥,即得。
优选地,S1所述乙酸-氯化氢溶液的用量为40mL左右,所述乙酸-氯化氢溶液为饱和氯化氢的乙酸溶液
优选地,S1所述静置是在室温下静置48~72小时。优选72小时。
优选地,S2所述中和采用氢氧化钠、氢氧化钾或碳酸钠。优选采用50%的氢氧化钠,所述50%为质量百分比浓度。
S3所述甲醇的用量为适量,根据S2得到固体产物的量适当调整甲醇用量。S3所述洗涤采用的是水。
本发明采用所述制备方法简单易行地制备得到类姜黄素化合物,并提供所述类姜黄素在制备卷烟自由基清除剂中的应用。
本发明的有益效果:
本发明提供了一种新的抗氧化剂,能解决吸烟过程中人体内自由基代谢失衡的问题,实现吸烟消费者的人体内自由基的代谢平衡,抑制香烟有害物质。
本发明根据有机分子的性质与结构特性设计科学合理的合成线路,简单易行地制备得到类姜黄素,制备条件温和,收率高,合成得到的抗氧化剂具有很强的抗氧化、抑制自由基的形成和清除自由基的能力,应用于香烟烟丝中,能够发挥抑制和清除自由基的作用,减少吸烟对人体带来的危害。
具体实施方式
下面结合具体实施例进一步详细说明本发明。除非特别说明,本发明采用的试剂、设备和方法为本技术领域常规市购的试剂、设备和常规使用的方法。
实施例1 化合物的制备
设计自由基抑制、清除剂的类姜黄素的合成路线如下:
具体的制备步骤:
S1.在100mL锥形瓶中,以1:2.1的摩尔比先加入4-取代哌啶酮和羟基苯甲醛,然后加入40mL乙酸-氯化氢溶液(饱和氯化氢的乙酸溶液,质量分数为30%左右),室温下搅拌使其溶解,静置48~72小时;
S2.将S1静置后所得反应混合物倒入150mL水溶液中,以50%的氢氧化钠溶液中和至中性,过滤得到固体产物;
S3.S2所得固体产物研磨碎后,用适量甲醇超声震荡,用水洗涤除去残余原料和其他杂质,过滤、干燥,得到产物。
本发明制备得到的类姜黄素的对应结构如下:
采用本发明方法制备得到的上述化合物1~22的结构表征如下:
化合物1: 1HNMR(300MHz, DMSO):2.40 (s, 3H, N-CH3), 3.71 (s, 4H, 2CH2),3.82 (s, 6H, N-CH3), 6.90 (d, J = 8.1 Hz, 2H, 2Ar), 6.98 (d, J = 8.7 Hz, 2H,2Ar), 7.07 (d, J = 1.2 Hz, 2H, 2Ar), 7.55(s, 2H, 2benzylidene); 13CNMR(75MHz,DMSO):45.4, 55.6, 56.6, 115.0, 115.7, 124.1, 126.2, 130.9, 135.0, 147.5,148.2, 185.9. ESI-Ms, m/e 382.1 [M+H]+。淡黄色固体,产率44%。
化合物2: 1HNMR(300MHz, DMSO):2.43 (s, 3H, N-CH3), 3.69 (s, 4H, 2CH2),6.83 (s, 4H, 2Ar), 6.91 (s, 2H, 2Ar), 7.42(s, 2H, 2benzylidene), 9.39 (br,4H, 4-OH); 13CNMR(75MHz, DMSO):45.6, 56.7, 115.8, 117.5, 123.5, 126.2, 130.5,134.9, 145.2, 147.2, 185.9. ESI-Ms, m/e 354.1 [M+H]+。淡黄色固体,产率58%。
化合物3 :1HNMR(300MHz, DMSO):3.01 (s, 3H, N-CH3), 4.61 (s, 4H, 2CH2),6.93 (s, 4H, 2Ar), 6.98 (s, 2H, 2Ar), 7.70 (s, 2H, 2benzylidene), 9.46 (br,2H, -OH), 9.93 (br, 2H, -OH); 13CNMR(75MHz, DMSO):42.3, 53.3, 116.1, 118.1,123.5, 124.1, 125.0, 139.9, 134.9, 145.5, 148.4, 181.0. ESI-Ms, m/e 354.1 [M+H]+ 。淡黄色固体,产率49%。
化合物4: 1HNMR(300MHz, DMSO):3.00 (s, 3H, N-CH3), 4.61 (s, 4H, 2CH2),6.94 (d, j = 56 Hz, 4H, Ar), 7.43 (d, j = 54 Hz, 4H, Ar), 7.79 (s, 2H,2benzylidene), 10.35 (br, 2H, -OH); 13CNMR(75MHz, DMSO):42.9, 53.9, 116.5,124.3, 125.0, 133.8, 140.0, 160.3, 181.6. ESI-Ms, m/e 322.1 [M+H]+。黄色固体,产率32%。
化合物5: 1HNMR(300MHz, DMSO): 2.72 (s, 3H, N-CH3), 4.22 (s, 4H, 2CH2),6.89-6.95 (m, 6H, Ar), 7.30 (t, j = 8.1Hz, 4H, Ar), 7.67 (s, 2H,2benzylidene), 9.84 (br, 2H, -OH); 13CNMR(75MHz, DMSO):43.3, 54.3, 117.0,117.1, 121.5, 129.2, 129.9, 135.0, 138.0, 157.6, 183.2. ESI-Ms, m/e 322.1 [M+H]+。白色固体,产率27%。
化合物6 : 1HNMR(300MHz, DMSO): 2.39 (s, 3H, N-CH3), 3.40 (d, j =12.9Hz, 2H), 3.58 (d, j = 13.5Hz, 2H), 6.67 (3.40 (d, j = 1.2Hz, 4H), 6.80(s, 2H, Ar), 6.91 (s, 2H, 2benzylidene)。ESI-Ms, m/e 354.1 [M+H]+ 。白色固体,产率39%。
化合物7: 1HNMR(300MHz, DMSO): 2.43 (s, 3H, N-CH3), 3.78 (s, 4H, 2CH2),3.82 (s, 12H, 4 –OCH3), 6.78 (s, 4H, Ar), 7.56 (s, 2H, Ar), 7.67 (s, 2H,2benzylidene), 9.01 (br, 2H, -OH); 13CNMR(75MHz, DMSO): 45.2, 56.0, 56.4,108.6, 125.0, 131.1, 135.4, 137.4, 147.8, 185.9. ESI-Ms, m/e 442.2 [M+H]+。淡黄色固体,产率44%。
化合物8: 1HNMR(DMSO): 1.35 (t, J = 6.9 Hz, 6H, 2CH3), 2.79 (s, 3H,NCH3), 4.07 (q, J = 6.9 Hz, 4H), 4.30 (s, 4H, 2CH2), 6.90-6.96 (m, 4H), 7.06(s, 2H), 7.68 (s, 2H), 9.69 (s, 2H).13CNMR(75MHz, DMSO): 15.6, 44.1, 55.1,64.7, 116.6, 117.2, 125.4, 126.0, 126.7, 139.0, 147.4, 149.9, 183.1. ESI-Ms,m/e 410.2[M+H]+。淡黄色固体,产率36%。
化合物9 :1HNMR(300MHz, DMSO): 2.39 (s, 3H, N-CH3), 3.72 (s, 4H, 2CH2),7.48 (d, j = 5.1Hz, 4H, Ar), 7.57 (s, 2H, 2benzylidene), 7.69 (d, j = 5.1Hz,4H, Ar); 13CNMR(75MHz, DMSO): 45.8, 56.7, 123.3, 132.2, 132.8, 134.0, 134.8,186.8, 192.9. ESI-Ms, m/e 378.2[M+H]+。淡黄色固体,产率27%。
化合物10: 1HNMR(300MHz, DMSO): 0.81 (t, J = 7.2 Hz, 3H, CH3), 1.38-1.46 (m, 2H, CH2), 2.47-2.52 (m, 2H, CH2), 3.73 (s, 4H, 2CH2), 6.89 (d, J =8.7 Hz, 4H, 2Ar), 7.38 (d, J = 8.7 Hz, 4H, 2Ar), 7.52 (s, 2H, 2benzylidene),10.04 (s, 2H, 2OH);13CNMR(75MHz, DMSO): 11.6, 19.8, 54.4, 58.6, 111.7, 125.8,130.9, 132.6, 134.6, 158.6, 186.4. ESI-Ms, m/e 350.1 [M+H]+。淡黄色固体,产率19%。
化合物11:1HNMR(300MHz, DMSO): 0.81 (t, J = 7.2 Hz, 3H, CH3), 1.38-1.45(m, 2H, CH2), 2.50-2.51 (m, 2H, CH2), 3.77 (s, 4H, 2CH2), 3.82 (s, 6H, 2OCH3), 6.89 (d, J = 8.1 Hz, 2H, 2Ar), 6.98 (d, J = 7.8 Hz, 2H, 2Ar), 7.08 (s, 2H,2Ar), 7.55 (s, 2H, 2benzylidene), 9.66 (s, 2H, 2OH);13CNMR(75MHz, DMSO): 11.7,19.8, 54.3, 55.6, 58.5, 114.9, 115.7, 124.1, 126.2, 131.1, 135.1, 147.5,148.1, 186.3. ESI-Ms, m/e 410.2 [M+H]+。淡黄色固体,产率23%。
化合物12: 1HNMR(300MHz, DMSO): 0.80 (t, J = 7.2 Hz, 3H, CH3), 1.33-1.43 (m, 2H, CH2), 2.45-2.50 (m, 2H, CH2), 3.75 (s, 4H, 2CH2), 6.79-6.91 (m,6H, 2Ar), 7.22-7.27 (m, 2H, 2Ar), 7.48 (s, 2H, 2benzylidene), 9.58 (s, 2H,2OH);13CNMR(75MHz, DMSO): 12.4, 20.6, 55.0, 59.2, 117.1, 117.4, 122.1, 130.4,132.6, 134.3, 135.5, 136.5, 158.0, 187.3. ESI-Ms, m/e 350.1 [M+H]+。淡黄色固体,产率54%。
化合物13:1HNMR(DMSO): 0.81 (t, J = 7.5 Hz, 3H, CH3), 1.32-1.42 (m, 8H,CH2+2CH3), 2.46-2.50 (m, 2H, CH2), 3.74 (s, 4H), 4.05 (q, J = 6.9 Hz, 2H,CH2), 7.37-7.42 (m, 2H), 7.47 (d, J = 7.8 Hz, 2H), 7.69 (dd, J1 = 7.8 Hz, J2 =1.8 Hz, 2H), 7.73 (s, 2H); 13CNMR(75MHz, DMSO): 12.5, 15.5, 20.6, 55.1, 59.3,64.6, 116.5, 116.9, 124.9, 126.9, 131.7, 135.8, 149.1, 186.8. ESI-Ms, m/e438.2 [M+H]+。淡黄色固体,产率16%。
化合物14:1HNMR(DMSO): 0.89 (t, J = 7.2 Hz, 3H, CH3), 1.66-1.74 (m, 2H,CH2), 3.24 (s, 2H, CH2), 4.56 (s, 4H, 2CH2), 6.90 (s, 4H, 2Ar), 6.99 (s, 2H,2benzylidene), 7.72 (s, 2H, 2Ar), 9.48 (s, 2H, 2OH), 9.90 (s, 2H, 2OH). 13CNMR(75MHz, DMSO): 10.8, 17.0, 52.2, 56.3, 116.1, 118.0, 123.3, 124.2, 124.9,140.1, 145.6, 148.4, 181.3. ESI-Ms, m/e 382.1 [M+H]+。淡黄色固体,产率43%。
化合物15:1HNMR(300MHz, DMSO): 1.04 (t, J = 6.9 Hz, 3H), 3.83 (s, 6H,2-OCH3), 3.99 (s, 2H), 4.77(s, 4H), 6.93 (s, 2H), 7.00 (s, 2H), 7.13 (s, 2H),7.66 (s, 2H), 9.74 (s, 2H, 2-OH). 13CNMR(75MHz, DMSO): 14.3, 44.9, 55.6, 61.2,115.0, 115.7, 124.3, 125.9, 129.6, 136.6, 147.6, 148.5, 154.6, 185.3. ESI-Ms,m/e 440.2 [M+H]+。淡黄色固体,产率34%。
化合物16:1HNMR(300MHz, DMSO): 1.03 (t, J = 7.2 Hz, 3H), 1.36 (t, J =6.9 Hz, 3H), 3.98 (q, J = 7.2 Hz, 2H), 4.10 (q, J = 7.2 Hz, 2H), 4.75(s, 4H),6.93 (d, J = 8.1 Hz, 2H), 7.01 (d, J = 8.1 Hz, 2H), 7.09 (s, 2H), 7.62 (s,2H), 9.67 (s, 2H, 2OH). ESI-Ms, m/e 468.2 [M+H]+。淡黄色固体,产率36%。
化合物17: 1HNMR(300MHz, DMSO): 3.80 (s, 12H), 6.87 (d, J = 8.1 Hz,2H), 6.95 (d, J = 8.4 Hz, 2H), 7.01 (s, 2H), 7.27-31 (m, 5H), 7.56 (s, 2H),9.70 (s, -OH, 1H). 13CNMR(75MHz, DMSO): 54.0, 55.5, 61.1, 114.5, 115.7, 124.6,126.0, 127.5, 128.3, 129.2, 130.6, 135.0, 147.5, 148.3, 186.2. ESI-Ms, m/e458.2 [M+H]+。淡黄色固体,产率39%。
化合物18:1HNMR(300MHz, DMSO): 1.34-1.36 (m, 6H), 3.74-3.77 (m, 6H),4.01-4.03 (m, 4H), 6.85-6.91 (m, 4H), 6.97 (s, 2H), 7.24-7.29 (m, 5H), 7.53(s, 2H), 9.58 (s, 2H, OH). 13CNMR (75MHz, DMSO): 14.7, 54.2, 61.2, 63.7,115.6, 115.7, 124.6, 126.1, 127.2, 128.1, 129.0, 130.7, 135.1, 137.6, 146.6,148.4, 186.1. ESI-Ms, m/e 486.2 [M+H]+。淡黄色固体,产率28%。
化合物19:1HNMR(300MHz, DMSO):4.18-4.29 (m, 6H), 6.89 (d, J = 8.4Hz,4H, 2Ar), 7.31-7.34 (m, 7H), 7.69 (s, 2H), 7.80 (br, 2H, 2-OH), 39 (br, 2H,2-OH). ESI-Ms, m/e 428.2 [M-H]-。淡黄色固体,产率33%。
化合物20:1HNMR(300MHz, DMSO): 1.36 (t, J = 6.9 Hz, 6H), 1.91 (s, 3H),4.09 (t, J = 6.3 Hz, 4H), 4.80 (d, J = 1.8 Hz, 4H), 6.92 (d, J = 8.4 Hz, 2H),7.00-7.04 (m, 2H), 7.12 (d, J = 3.0 Hz, 2H), 7.61 (s, 2H), 9.65 (s, 2H, 2-OH). 13CNMR(75MHz, DMSO): 14.7, 20.8, 42.3, 47.0, 63.9, 115.8, 116.6, 124.4,125.9, 129.8, 136.6, 146.7, 148.8, 168.6, 185.6. ESI-Ms, m/e 436.2 [M-H]-。淡黄色固体,产率32%。
化合物21: 1.92 (s, 3H), 3.84 (s, 6H), 4.81 (s, 4H), 6.92 (d J = 6.9Hz, 2H), 7.03 (s, 2H), 7.14 (s, 2H), 7.63 (s, 2H), 9.74 (s, 2H, 2-OH). ESI-Ms, m/e 410.2 [M+H]+。淡黄色固体,产率28%。
化合物22:1HNMR(300MHz, DMSO): 1.36 (t, J = 6.9 Hz, 3H), 2.74 (t, J =6.6 Hz, 2H), 2.81 (t, J = 7.2 Hz, 2H), 3.84 (s, 4H), 4.10 (q, J = 6.9 Hz,2H), 6.87 (d, J = 8.1 Hz, 2H), 6.97 (d, J = 8.1 Hz, 2H), 7.07 (s, 2H), 7.15-7.23 (m, 5H), 7.53 (s, 6H), 9.57 (s, 2H). 13CNMR(75MHz, DMSO): 14.7, 21.0,54.2, 58.2, 63.8, 116.1, 124.3, 125.8, 126.2, 128.2, 128.6, 131.0, 135.1,140.0, 146.6, 148.4, 172.0, 186.3. ESI-Ms, m/e 500.2 [M+H]+。淡黄色固体,产率32%。
实施例2 清除自由基效果验证实验
参考文献[金鸣、蔡亚欣,等。邻二氮菲-Fe2+氧化法检测H2O2、Fe2+产生的羟基自由基,生物化学与生物物理进展,1996,23(6):553-555]介绍方法,采用Fenton反应完成测定。
操作步骤:在10mL容量瓶中,依次加入5mmol/L的邻二氮菲1.5mL,pH 为7.4,0.5mol/L 的磷酸缓冲液3mL,7.5mmol/L 的FeSO41.0mL,立即混匀。再加入待测样品 3mL,0.1% H2O21.0mL,用蒸馏水定容至10mL。混匀后于37℃水浴中加热1 小时,然后在510nm 波长下测定其吸光值。
计算方法: 自由基清除率 EC50 =(As-A0)/(A1 -A0
其中,As为加了待测样品和 H2O2的溶液所测得的吸光值,A1为没有加样品和H2O2的溶液所测得的吸光值,A0为没有加样品,但加了H2O2的溶液所测得的吸光值。测定结果见表1。
表1
从表1看出,本发明所有的化合物均具有清除HO自由基的能力,化合物的清除HO自由基的能力与分子中含有的羟基数目和羟基所处的位置有关。除了化合物4、9、10和12外,其余化合物的EC50值均低于对照品维生素C的EC50值,说明它们清除HO自由基的能力均高于维生素C,具有较高的开发利用价值。尤以化合物1、2、3、6、15、20、21更具有显著的清除HO自由基的能力。
实施例3 应用卷烟的实验
选择某品牌卷烟叶组分成两组,将本发明化合物在烟丝卷制过程中分别加入烟丝。加入的化合物的量占烟丝总质量的0.015%。具体是将化合物溶于乙醇中,把溶有化合物的乙醇均匀喷洒于烟丝上,乙醇随后挥发。烟丝经卷制成检测样品卷烟。以同品牌不添加本化合物的卷烟作为空白对照组,卷烟经平衡处理后挑选与平均质量和平均吸阻相近的卷烟,采用电子自旋共振法检测气相自由基。对照组卷烟平均气相自由基为9.52左右(自旋数1014/支),本发明卷烟平均气相自由基为7.18左右,气相自由基清除率为24.58%。

Claims (3)

1.一种类姜黄素,其特征在于,所述的类姜黄素的结构式为以下其中的一种:
2.一种根据权利要求1所述的类姜黄素的制备方法,其特征在于,以1:2.1的摩尔比先加入4-取代哌啶酮和羟基苯甲醛,然后加入40mL乙酸-氯化氢溶液;室温下搅拌使其溶解,静止,把反应混合物倒入水溶液中,中和至中性,过滤得到固体产物,固体产物研磨后,用甲醇进行超声震荡,洗涤除去残余原料和其他杂质,过滤、干燥,即得。
3.一种根据权利要求1所述的类姜黄素在制备卷烟自由基清除剂中的应用。
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