CN114478667A - 4”,23-氧醚基取代的阿维菌素B2a/B2b衍生物及其制备方法和应用 - Google Patents
4”,23-氧醚基取代的阿维菌素B2a/B2b衍生物及其制备方法和应用 Download PDFInfo
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- CN114478667A CN114478667A CN202111611618.8A CN202111611618A CN114478667A CN 114478667 A CN114478667 A CN 114478667A CN 202111611618 A CN202111611618 A CN 202111611618A CN 114478667 A CN114478667 A CN 114478667A
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- CWGATOJEFAKFBK-PDVFGPFMSA-N 5-o-demethyl-22,23-dihydro-23-hydroxy-(13r,23s)-avermectin a1a Chemical class C1[C@H](O)[C@H](C)[C@@H]([C@@H](C)CC)O[C@]11O[C@H](C\C=C(C)\[C@@H](O[C@@H]2O[C@@H](C)[C@H](O[C@@H]3O[C@@H](C)[C@H](O)[C@@H](OC)C3)[C@@H](OC)C2)[C@@H](C)\C=C\C=C/2[C@]3([C@H](C(=O)O4)C=C(C)[C@@H](O)[C@H]3OC\2)O)C[C@H]4C1 CWGATOJEFAKFBK-PDVFGPFMSA-N 0.000 title claims abstract description 44
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 17
- 239000001301 oxygen Substances 0.000 title claims abstract description 17
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- 241000607479 Yersinia pestis Species 0.000 claims abstract description 11
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- -1 avermectin compound Chemical class 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims abstract description 3
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- 239000005660 Abamectin Substances 0.000 abstract description 24
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- ZPAKHHSWIYDSBJ-YAGODIQJSA-N Avermectin B2b Chemical compound O1[C@@H](C)[C@H](O)[C@@H](OC)C[C@@H]1O[C@@H]1[C@@H](OC)C[C@H](O[C@@H]2C(=C/C[C@@H]3C[C@@H](C[C@@]4(O[C@@H]([C@@H](C)[C@@H](O)C4)C(C)C)O3)OC(=O)[C@@H]3C=C(C)[C@@H](O)[C@H]4OC\C([C@@]34O)=C/C=C/[C@@H]2C)/C)O[C@H]1C ZPAKHHSWIYDSBJ-YAGODIQJSA-N 0.000 description 27
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- ZPAKHHSWIYDSBJ-UHFFFAOYSA-N avermectin B2b Natural products O1C(C)C(O)C(OC)CC1OC1C(OC)CC(OC2C(=CCC3CC(CC4(OC(C(C)C(O)C4)C(C)C)O3)OC(=O)C3C=C(C)C(O)C4OCC(C34O)=CC=CC2C)C)OC1C ZPAKHHSWIYDSBJ-UHFFFAOYSA-N 0.000 description 27
- 239000012071 phase Substances 0.000 description 24
- IBSREHMXUMOFBB-JFUDTMANSA-N 5u8924t11h Chemical compound O1[C@@H](C)[C@H](O)[C@@H](OC)C[C@@H]1O[C@@H]1[C@@H](OC)C[C@H](O[C@@H]2C(=C/C[C@@H]3C[C@@H](C[C@@]4(O3)C=C[C@H](C)[C@@H](C(C)C)O4)OC(=O)[C@@H]3C=C(C)[C@@H](O)[C@H]4OC\C([C@@]34O)=C/C=C/[C@@H]2C)/C)O[C@H]1C.C1=C[C@H](C)[C@@H]([C@@H](C)CC)O[C@]11O[C@H](C\C=C(C)\[C@@H](O[C@@H]2O[C@@H](C)[C@H](O[C@@H]3O[C@@H](C)[C@H](O)[C@@H](OC)C3)[C@@H](OC)C2)[C@@H](C)\C=C\C=C/2[C@]3([C@H](C(=O)O4)C=C(C)[C@@H](O)[C@H]3OC\2)O)C[C@H]4C1 IBSREHMXUMOFBB-JFUDTMANSA-N 0.000 description 23
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- GXWUEMSASMVWKO-GNLHUFSQSA-N (4as,6ar,6as,6br,10s,12ar,14br)-10-[(2s,3r,4s,5s)-4,5-dihydroxy-3-[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-2,2,6a,6b,9,9,12a-heptamethyl-1,3,4,5,6,6a,7,8,8a,10,11,12,13,14b-tetradecahydropicene-4a-carboxylic acid Chemical compound O([C@@H]1[C@@H](O)[C@@H](O)CO[C@H]1O[C@H]1CC[C@]2(C)[C@H]3CC=C4[C@@]([C@@]3(CCC2C1(C)C)C)(C)CC[C@]1(CCC(C[C@@H]14)(C)C)C(O)=O)[C@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O GXWUEMSASMVWKO-GNLHUFSQSA-N 0.000 description 2
- XJUZRXYOEPSWMB-UHFFFAOYSA-N Chloromethyl methyl ether Chemical compound COCCl XJUZRXYOEPSWMB-UHFFFAOYSA-N 0.000 description 2
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- 241000738498 Epitrix pubescens Species 0.000 description 2
- 241001477931 Mythimna unipuncta Species 0.000 description 2
- RRZXIRBKKLTSOM-XPNPUAGNSA-N avermectin B1a Chemical class C1=C[C@H](C)[C@@H]([C@@H](C)CC)O[C@]11O[C@H](C\C=C(C)\[C@@H](O[C@@H]2O[C@@H](C)[C@H](O[C@@H]3O[C@@H](C)[C@H](O)[C@@H](OC)C3)[C@@H](OC)C2)[C@@H](C)\C=C\C=C/2[C@]3([C@H](C(=O)O4)C=C(C)[C@@H](O)[C@H]3OC\2)O)C[C@H]4C1 RRZXIRBKKLTSOM-XPNPUAGNSA-N 0.000 description 2
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- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H17/00—Compounds containing heterocyclic radicals directly attached to hetero atoms of saccharide radicals
- C07H17/04—Heterocyclic radicals containing only oxygen as ring hetero atoms
- C07H17/08—Hetero rings containing eight or more ring members, e.g. erythromycins
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- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
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Abstract
本发明公开了一种4”,23‑氧醚基取代的阿维菌素B2a/B2b衍生物及其制备方法与应用,该化合物的化学结构通式如式Ⅰ所示,该类化合物可有效提高阿维菌素化合物的稳定性和杀虫活性,尤其对缨翅目害虫具有特效。
Description
技术领域
本发明涉及化合物,尤其是一类4”,23-氧醚基取代的阿维菌素B2a/B2b衍生物及其制备方法和应用,属于农作物杀虫剂。
背景技术
阿维菌素B1组分因其优异的杀虫、杀螨性能被广泛应用于动植物害虫的防护中。近年来国内外对阿维菌素B1衍生物的研究越来越多。
国外文献对C13位置进行改造,除去齐墩果糖部分,加入其他基团,得到一系列具有杀体外寄生虫、昆虫活性的化合物,可以用于人类和动物保健以及农业中,尤其对蠕虫、恶丝虫属、无刺线虫等具有显著的杀灭活性。有文献公开了通过将阿维菌素包含C4’和C4”在内的多个羟基位点氧化成酮,之后通过格氏试剂得到一系列羟基、烷基、环烷基和不饱和烷基取代的阿维菌素衍生物。有通过重氮甲烷试剂在齐墩果糖或单糖基阿维菌素糖环外侧引入螺环系。有的公开了一系列经优化结构的C4”的阿维菌素B1磺酸眯类化合物。
阿维菌素B2a/B2b是近年来刚被开发出来的阿维菌素新产品,是一种优良的杀虫剂,杀虫谱与阿维菌素B1不完全相同。目前对阿维菌素B2a/B2b的探索主要集中在把阿维菌素B2a/B2b的1位酯键变酰胺键、合成阿维菌素B2a/B2b 螺缩酮裂解的衍生物等,如专利文献CN105820202A、CN105037467A。在对阿维菌素B2a/B2b进行结构改造和生测研究过程中,发现4”,23位氧醚基取代的阿维菌素B2a/B2b衍生物,有良好的杀虫杀螨活性,不仅对鳞翅目害虫有效尤其对缨翅目的害虫有特效,拓宽了阿维菌素B2a/B2b衍生物的杀虫谱。
发明内容
本发明提供了一种4”,23-氧醚基取代的阿维菌素B2a/B2b衍生物及其制备方法,该衍生物稳定性高,杀虫活性高,尤其对缨翅目害虫具有特效。
为实现上述发明目的,本发明所采用的技术方案是:
一种4”,23-氧醚基取代的阿维菌素B2a/B2b衍生物,具有如式Ⅰ所示的化学结构通式,
其中,R1为甲基或乙基;
R2、R3为H或-CH2-O-R4,但不同时为H;
R4为C1-C4烷基、苯基或吡啶基、C1-C4烷基或卤素取代的苯基或吡啶基。
本技术方案中式I化合物的制备方法如下:(1)如式II和式III所示的原料溶于惰性溶剂中,在一定温度下,加入特征碱,反应得到中间体,用酸调反应液至中性,水洗分层;(2)有机相中加入脱保护催化剂,脱掉保护基团,水洗分层,有机相蒸出溶剂即得到产物式I。
式II、式III结构如下所示:
R4为C1-C4烷基、苯基或吡啶基、C1-C4烷基或卤素取代的苯基或吡啶基;
R5:烯丙氧基羰基或二甲基叔丁基硅基;
R6:H或R5;
R6为H时得到的是4”-醚化合物或4”,23-二醚化合物;R6同R5时,得到是23-醚化合物;
X:卤素。
其中:步骤(1)中的惰性溶剂为二氯甲烷、二氯乙烷、甲苯、醋酸仲丁酯、醋酸异丙酯等,加入量为原料式III重量的3-5倍;
原料式II与式III的摩尔比为1.0-3.0:1.0;
特征碱为四甲基乙撑二胺、三乙胺、二异丙胺等有机碱,特征碱与原料式II 的摩尔比为0.5-2.0:1.0;
当原料式III中保护基团为烯丙氧基羰基时,步骤(2)中需加入甲醇或乙醇,脱保护剂为四三苯基膦钯和硼氢化钠,四三苯基膦钯、硼氢化钠与原料式III 的摩尔比为0.001-0.01:0.5-1.5:1.0;式III中保护基团为二甲基叔丁基硅基时,步骤(2)中的脱保护剂为氟化铵,氟化铵与式III的摩尔比为1.0-3.0:1.0。
一种4”,23-氧醚基取代的阿维菌素B2a/B2b衍生物的应用,防治农业和畜牧业中鳞翅目、鞘翅目、缨翅目害虫以及螨虫类害虫,可有效提高化合物杀虫活性,尤其对缨翅目害虫具有特效。
由于采用了上述技术方案,本发明取得的技术进步是:
本申请发现了阿维菌素B2a/B2b衍生物的新用途,阿维菌素B2a/B2b产品多对鳞翅目、螨类、地下害虫有防效,目前市场上杀虫杀螨的药物很多,但对缨翅目害虫如蓟马、跳甲类有效果的药物很少,本发明对蓟马跳甲类害虫的杀虫活性远远高于现有市售品种,发现了阿维菌素B2a/B2b类衍生物产品的新用途。可有效提高化合物杀虫活性,尤其对缨翅目害虫具有特效,活性远远好于阿维菌素B2a/B2b。
本申请发明了一类新结构的阿维菌素B2a/B2b化合物,拓展了阿维菌素 B2a/B2b衍生物的应用范围,使阿维菌素B2a/B2b的得到了更有效的利用。
附图说明
图1是4”,23-二甲氧基甲基醚阿维菌素B2a/B2b的核磁图谱;
图2是4”,23-二乙氧甲基醚阿维菌素B2a/B2b的核磁图谱;
图3是4”-苯氧甲基醚阿维菌素B2a/B2b的核磁图谱;
图4是4”-丙氧基甲基醚阿维菌素B2a/B2b的核磁图谱;
图5是4”-丁氧基甲基醚阿维菌素B2a/B2b的核磁图谱。
具体实施方式
下面结合实施例对本发明做进一步详细说明:
实施例1 4”,23-二甲氧基甲基醚阿维菌素B2a/B2b
5-烯丙氧基羰基保护的阿维菌素B2a/B2b,10g(0.01mol),溶于50g二氯甲烷中,降温至-10~0℃,加入甲氧基氯代甲烷3.22g(0.04mol),慢慢滴加二异丙胺3.04g(0.03mol),加完后温度缓慢升温至室温,保温4h,盐酸调pH=4-5,终止反应,加水洗,分层,二氯甲烷相干燥,过滤,降温至0℃,加入10g甲醇, 0.01g四三苯基膦钯,分批加入硼氢化钠0.5g,1h后反应结束,反应液用盐酸调 pH=5-6再用液碱调pH=7,分层除去水相,二氯甲烷相蒸出溶剂,得到4”,23-二甲氧基甲基醚阿维菌素B2a/B2b 8.8g,含量95.3%。H谱核磁见图1。
实施例2 23-甲氧基甲基醚阿维菌素B2a/B2b
5,4”-二烯丙氧基羰基保护的阿维菌素B2a/B2b,10.6g(0.01mol),溶于50g 二氯甲烷中,降温至-10~0℃,加入甲氧基氯代甲烷3.22g(0.02mol),慢慢滴加三乙胺3.04g(0.03mol),加完后温度缓慢升温至室温,保温4h,盐酸调pH=4- 5,终止反应,加水洗,分层,二氯甲烷相干燥,过滤,降温至0℃,加入10g甲醇,0.02g四三苯基膦钯,分批加入硼氢化钠1.0g,1h后反应结束,反应液用盐酸调pH=5-6再用液碱调pH=7-8,分层除去水相,二氯甲烷相蒸出溶剂,得到23-甲氧基甲基醚阿维菌素B2a/B2b 8.4g,含量95.8%。
实施例3 4”,23-二乙氧甲基醚阿维菌素B2a/B2b
5-烯丙氧基羰基保护的阿维菌素B2a/B2b,10g(0.01mol),溶于50g二氯甲烷中,降温至-10~0℃,加入乙氧基氯代甲烷3.78g(0.04mol),慢慢滴加四甲基乙撑二胺3.5g(0.03mol),加完后温度缓慢升温至室温,保温4h,盐酸调pH=4- 5,终止反应,加水洗,分层,二氯甲烷相干燥,过滤,降温至0℃,加入10g甲醇,0.01g四三苯基膦钯,分批加入硼氢化钠0.5g,1h后反应结束,反应液用盐酸调pH=5-6再用液碱调pH=7,分层除去水相,二氯甲烷相蒸出溶剂,得到4”, 23-二乙氧基甲醚阿维菌素B2a/B2b 9.1g,含量96.0%。H谱核磁见图2
实施例4 4”-苯氧甲基醚阿维菌素B2a/B2b
5-烯丙氧基羰基保护的阿维菌素B2a/B2b,10g(0.01mol),溶于50g二氯甲烷中,降温至-10~0℃,加入苯氧基氯代甲烷3.1g(0.02mol),慢慢滴加二异丙胺3.04g(0.03mol),加完后温度缓慢升温至室温,保温4h,盐酸调pH=4-5,终止反应,加水洗,分层,二氯甲烷相干燥,过滤,降温至0℃,加入10g甲醇, 0.01g四三苯基膦钯,分批加入硼氢化钠0.5g,1h后反应结束,反应液用盐酸调 pH=5-6再用液碱调pH=7,分层除去水相,二氯甲烷相蒸出溶剂,得到4”-苯甲氧基甲基醚阿维菌素B2a/B2b 8.9g,含量96.3%。H谱核磁见图3。
实施例5 4”-丙氧基甲基醚阿维菌素B2a/B2b
5-烯丙氧基羰基保护的阿维菌素B2a/B2b,10g(0.01mol),溶于50g醋酸仲丁酯中,降温至-10~0℃,加入丙氧基氯代甲烷3.1g(0.02mol),慢慢滴加二异丙胺3.04g(0.03mol),加完后温度缓慢升温至室温,保温4h,盐酸调pH=4-5,终止反应,加水洗,分层,有机相干燥,过滤,降温至0℃,加入10g甲醇,0.01g 四三苯基膦钯,分批加入硼氢化钠0.5g,1h后反应结束,反应液用盐酸调pH=5- 6再用液碱调pH=7,分层除去水相,有机相蒸出溶剂,得到4”-丙氧基甲基醚阿维菌素B2a/B2b 9.0g,含量96.5%。
实施例6 4”-丁氧基甲基醚阿维菌素B2a/B2b
5-二甲基叔丁基硅基保护的阿维菌素B2a/B2b,10.1g(0.01mol),溶于50g 二氯甲烷中,降温至-10~0℃,加入丁氧基氯代甲烷3.3g(0.02mol),慢慢滴加二异丙胺3.04g(0.03mol),加完后温度缓慢升温至室温,保温4h,盐酸调pH=4- 5,终止反应,加水洗,分层,二氯甲烷相干燥,过滤,降温至0℃,加入氟化铵0.4g,加入醋酸0.5g,1h后反应结束,反应液用液碱调pH=7-8,分层除去水相,二氯甲烷相蒸出溶剂,得到4”-丁氧基甲基醚阿维菌素B2a/B2b 9.1g,含量 95.2%。
H谱核磁见图5。
实施例7 4”-对氯苯甲氧基甲基醚阿维菌素B2a/B2b
5-烯丙氧基羰基保护的阿维菌素B2a/B2b,10g(0.01mol),溶于50g二氯甲烷中,降温至-10~0℃,加入苯氧基氯代甲烷4.0g(0.02mol),慢慢滴加二异丙胺3.04g(0.03mol),加完后温度缓慢升温至室温,保温4h,盐酸调pH=4-5,终止反应,加水洗,分层,二氯甲烷相干燥,过滤,降温至0℃,加入10g甲醇, 0.01g四三苯基膦钯,分批加入硼氢化钠0.5g,1h后反应结束,反应液用盐酸调 pH=5-6再用液碱调pH=7,分层除去水相,二氯甲烷相蒸出溶剂,得到4”-苯甲氧基甲基醚阿维菌素B2a/B2b 9.4g,含量95.5%。
实施例8 4”-(3-吡啶基)甲氧基甲基醚阿维菌素B2a/B2b
5-烯丙氧基羰基保护的阿维菌素B2a/B2b,10g(0.01mol),溶于50g二氯甲烷中,降温至-10~0℃,加入3-吡啶基甲氧基氯代甲烷3.3g(0.02mol),慢慢滴加二异丙胺3.04g(0.03mol),加完后温度缓慢升温至室温,保温4h,盐酸调pH=4- 5,终止反应,加水洗,分层,二氯甲烷相干燥,过滤,降温至0℃,加入10g甲醇,0.01g四三苯基膦钯,分批加入硼氢化钠0.5g,1h后反应结束,反应液用盐酸调pH=5-6再用液碱调pH=7,分层除去水相,二氯甲烷相蒸出溶剂,得到4”- (3-吡啶基)甲氧基甲基醚阿维菌素B2a/B2b 8.1g,含量96.0%。
实施例9 4”-(5-甲基-3-吡啶基-甲氧基)甲基醚阿维菌素B2a/B2b
5-烯丙氧基羰基保护的阿维菌素B2a/B2b,10g(0.01mol),溶于50g二氯甲烷中,降温至-10~0℃,加入3-吡啶基-5-甲基甲氧基氯代甲烷3.5g(0.02mol),慢慢滴加二异丙胺3.04g(0.03mol),加完后温度缓慢升温至室温,保温4h,盐酸调pH=4-5,终止反应,加水洗,分层,二氯甲烷相干燥,过滤,降温至0℃,加入10g甲醇,0.01g四三苯基膦钯,分批加入硼氢化钠0.5g,1h后反应结束,反应液用盐酸调pH=5-6再用液碱调pH=7,分层除去水相,二氯甲烷相蒸出溶剂,得到4”-(5-甲基-3-吡啶基-甲氧基)甲基醚阿维菌素B2a/B2b 8.7g,含量94.9%。
实施例10药效数据对照
选取目前市场上防治蓟马药效最好的乙基多杀菌素进行药效对照。
(1)试验方法
参照《农药生物活性评价SOP》。
粘虫采用喷雾法。在垫有滤纸的培养皿(Ф90mm)中,放入大小基本一致的玉米叶段,再接入三龄幼虫10头,放到Potter喷雾塔下进行喷雾。喷雾量1ml/10头,每处理3次重复。处理完毕,放到恢复室内培养。定时进行观察。72h后检查并记载死亡情况,计算死亡率。
蓟马采用浸叶接虫法。将大葱剪成12厘米长(带茎),在供试药液中浸渍10 秒后,等自然晾干后置于玻璃试管(直径20-30mm)中,再挑选蓟马若虫到玻璃试管中,每皿不低于10头,3次重复,处理完毕,用黑布扎好试管口,置于观察室内培养。72h后检查并记载死亡情况,计算死亡率。
跳甲采用浸叶接虫法。挑选甘蓝幼苗3-5根,将幼苗在供试药液中浸渍10秒,自然晾干后放入烧杯(25mL)中,再挑选跳甲成虫到烧杯中,每烧杯不低于10 头,3次重复,处理完毕,用封口膜封住杯口,用针头戳10个小洞,置于观察室内培养,72h后检查并记载死亡情况,计算死亡率。
棉红蜘蛛采用浸渍法。将带有棉红蜘蛛的蚕豆苗剪下,在配制好的药液中浸渍15秒后取出,用滤纸吸去植株及螨体周围多余的药液,插到装水并用帕拉膜封口的烧杯上,每处理3次重复。处理完毕,放到恢复室内培养,定时进行观察, 72h后检查并记载死亡情况,计算死亡率。
(2)调查方法
48或者72h后检查试虫死亡情况,并进行记录,试虫死亡判断标准为:以毛笔轻轻接触试虫无反应计为死亡。
(3)生物活性评价方法
死亡率在90%以上为A级,70~90%之间为B级,50~70%之间为C级,在0~ 50%之间为D级。活性达到A级或B级可以考虑进行进一步筛选。
(4)结果分析与讨论
4”,23-氧醚基阿维菌素B2a/B2b衍生物杀虫活性测定结果
上述数据表明:4”,23-氧醚基取代的阿维菌素B2a/B2b衍生物不仅对粘虫有杀虫活性,对蓟马、跳甲、红蜘蛛有更高的活性。
Claims (7)
3.根据权利要求2所述的一种4”,23-氧醚基取代的阿维菌素B2a/B2b衍生物,其特征在于:步骤(1)中的惰性溶剂为二氯甲烷、二氯乙烷、甲苯、醋酸仲丁酯、醋酸异丙酯其中的一种,加入量为原料式III重量的3-5倍。
4.根据权利要求2所述的一种4”,23-氧醚基取代的阿维菌素B2a/B2b衍生物,其特征在于:步骤(1)中原料式II与式III的摩尔比为1.0-3.0:1.0。
5.根据权利要求2所述的一种4”,23-氧醚基取代的阿维菌素B2a/B2b衍生物,其特征在于:步骤(1)中的特征碱为四甲基乙撑二胺、三乙胺、二异丙胺等有机碱,特征碱与原料式II的摩尔比为0.5-2.0:1.0。
6.根据权利要求2所述的一种4”,23-氧醚基取代的阿维菌素B2a/B2b衍生物,其特征在于:式III中保护基团为烯丙氧基羰基时,步骤(2)中需加入甲醇或乙醇,脱保护剂为四三苯基膦钯和硼氢化钠,四三苯基膦钯、硼氢化钠与原料式III的摩尔比为0.001-0.01:0.5-1.5:1.0;式III中保护基团为二甲基叔丁基硅基时,步骤(2)中的脱保护剂为氟化铵,氟化铵与式III的摩尔比为1.0-3.0:1.0。
7.权利要求1所述的一种4”,23-氧醚基取代的阿维菌素B2a/B2b衍生物的应用,其特征在于:防治农业和畜牧业中鳞翅目、鞘翅目、缨翅目害虫以及螨虫类害虫。
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