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本文报道了利用四氯化钛媒介的不对称aldol缩合为关键步骤合成抗生素antimycin
A的降解产物blastmycinone,并介绍了在研究过程中所观察到的一些意外现象。 相似文献
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中国有机合成化学家的攀登 总被引:2,自引:0,他引:2
简要回顾了建国50年、特别是近20年来中国有机合成化学家们在于然产物及其类似物的合成方面所取得的若干具代表性的成就。 相似文献
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A [1,2]dioxolane-type peroxide was synthesized and tested for its cleavage behavior with Fe^2 -cysteinate as a simple model of biological redox species. No S-alkylation product was observed. 相似文献
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Synthesis of 15-demethyl brefeldin A and its 7-epimer is detailed. X-ray crystallographic structure for 15-demethyl brefeldin A is also disclosed. 相似文献
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本文报道了以价廉易得的D-木糖为起始原料合成数种尚未见报道过的含有潜在1,3-二羟基手性及末端环氧的光学活性合成砌块的简便实用方法。 相似文献
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Some attempts to employ the singlet oxygen generated from molybdate-catalyzed decomposition of hydrogen peroxide are presented. Reduction of ascaridole with diimide is also described, along with the preliminary results of the cleavage study using Fe-cysteinate as a simple model for Fe-S type redox species. There were strong indications that S-alkylation occurred as observed in similar cleavage of the potent antimalarial qinghaosu. 相似文献
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The rate of atmospheric pressure hydrogenolysis of terminal e-poxides over palladium-charcoal to the corresponding methyl al-cohols could be remarkably accelerated by introduction of Co-Cl_2 or NiSO_4. 相似文献