2010
DOI: 10.1055/s-0030-1249972
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New Cytotoxic Tetrahydroprotoberberine-Aporphine Dimeric and Aporphine Alkaloids fromCorydalis turtschaninovii

Abstract: Two new tetrahydroprotoberberine-aporphine dimeric alkaloids, corydaturtschines A (1) and B (2), and a new aporphine derivative, ethyl glausuccinate (3), together with 13 known protoberberine (4-16) and nine known aporphine alkaloids (17-25), were isolated from the tubers of Corydalis turtschaninovii. The structures of these new compounds were determined through spectral analyses, including extensive 2D-NMR data. The absolute configurations of the compounds were clarified by CD spectroscopic studies. The isola… Show more

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Cited by 20 publications
(9 citation statements)
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“…The chemical shifts and the coupling patterns in the 1 H‐ and 13 C–NMR data corresponded to those of a protoberberine‐type alkaloid, dehydrocorydaline as shown in Fig. A (Kim et al ., ; Yhsw X, ), which has been previously isolated from Corydalis bulbosa (Kurahashi and Fujiwara, ).…”
Section: Methodsmentioning
confidence: 99%
“…The chemical shifts and the coupling patterns in the 1 H‐ and 13 C–NMR data corresponded to those of a protoberberine‐type alkaloid, dehydrocorydaline as shown in Fig. A (Kim et al ., ; Yhsw X, ), which has been previously isolated from Corydalis bulbosa (Kurahashi and Fujiwara, ).…”
Section: Methodsmentioning
confidence: 99%
“…Corydaline (>98%) was obtained from Wako Pure Chemical Industries, Ltd. (Osaka, Japan). Corybulbine, isocorybulbine, and yuanhunine were isolated from the tubers of Corydalis turtschaninovii using our previous method []. Nicotinamide adenine dinucleotide phosphate (NADP + ), glucose‐6‐phosphate, and glucose‐6‐phosphate dehydrogenase were obtained from Sigma Chemical Co. (St. Louis, MO, USA).…”
Section: Methodsmentioning
confidence: 99%
“…The molecular formula was determined to be C 18 C NMR data of 1 implied that compound 1 may be a trioxygenated aporphine-type alkaloid by the aforementioned evidence and reported literatures. [15][16][17][18] The structure of the aporphine-type skeleton was ultimately elucidated by the interpretation of the 1 H-1 H correlated spectroscopy (COSY), heteronuclear multiple quantum correlation (HMQC), and heteronuclear multiple bond correlation (HMBC) data. The HMQC spectrum permitted the correlation of all protonated carbons.…”
Section: Resultsmentioning
confidence: 67%