Two novel alkaloids, with an unprecedented carbon skeleton, pileamartines A (1) and B (2), together with the known alkaloid, julandine (I-a) were isolated from the alkaloidal fraction of Pilea aff. martinii leaves. Their structures were established by spectral data analysis, including MS and 2D NMR. The absolute configurations of 1 and 2 were suggested by comparison of their experimental and calculated electronic circular dichroism spectra. Compound 2 exhibited weak inhibitory activity against the a-glucosidase enzyme with an inhibition of 11% at a concentration of 200 mu M. These compounds were not cytotoxic against several cancer cell lines even at a concentration of 150 mu M. (C) 2018 Published by Elsevier Ltd.
机构:
Ocean Univ China, Sch Med & Pharm, Chinese Minist Educ, Key Lab Marine Drugs, Qingdao 266003, Peoples R China
Qingdao Huanghai Pharmaceut Co Ltd, Qingdao 266101, Peoples R ChinaOcean Univ China, Sch Med & Pharm, Chinese Minist Educ, Key Lab Marine Drugs, Qingdao 266003, Peoples R China
An, Liang
Song, Wenjuan
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Ocean Univ China, Sch Med & Pharm, Chinese Minist Educ, Key Lab Marine Drugs, Qingdao 266003, Peoples R China
Qingdao Natl Lab Marine Sci & Technol, Lab Marine Drugs & Bioprod, Qingdao, Shandong, Peoples R ChinaOcean Univ China, Sch Med & Pharm, Chinese Minist Educ, Key Lab Marine Drugs, Qingdao 266003, Peoples R China
Song, Wenjuan
Tang, Xuli
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Ocean Univ China, Coll Chem & Chem Engn, Qingdao 266100, Peoples R ChinaOcean Univ China, Sch Med & Pharm, Chinese Minist Educ, Key Lab Marine Drugs, Qingdao 266003, Peoples R China
Tang, Xuli
de Voogd, Nicole J.
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Natl Museum Nat Hist, NL-2300 RA Leiden, NetherlandsOcean Univ China, Sch Med & Pharm, Chinese Minist Educ, Key Lab Marine Drugs, Qingdao 266003, Peoples R China
de Voogd, Nicole J.
Wang, Qi
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Ocean Univ China, Sch Med & Pharm, Chinese Minist Educ, Key Lab Marine Drugs, Qingdao 266003, Peoples R China
Qingdao Natl Lab Marine Sci & Technol, Lab Marine Drugs & Bioprod, Qingdao, Shandong, Peoples R ChinaOcean Univ China, Sch Med & Pharm, Chinese Minist Educ, Key Lab Marine Drugs, Qingdao 266003, Peoples R China
Wang, Qi
Chu, Meijun
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Ocean Univ China, Sch Med & Pharm, Chinese Minist Educ, Key Lab Marine Drugs, Qingdao 266003, Peoples R China
Qingdao Natl Lab Marine Sci & Technol, Lab Marine Drugs & Bioprod, Qingdao, Shandong, Peoples R ChinaOcean Univ China, Sch Med & Pharm, Chinese Minist Educ, Key Lab Marine Drugs, Qingdao 266003, Peoples R China
Chu, Meijun
Li, Pinglin
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Ocean Univ China, Sch Med & Pharm, Chinese Minist Educ, Key Lab Marine Drugs, Qingdao 266003, Peoples R China
Qingdao Natl Lab Marine Sci & Technol, Lab Marine Drugs & Bioprod, Qingdao, Shandong, Peoples R ChinaOcean Univ China, Sch Med & Pharm, Chinese Minist Educ, Key Lab Marine Drugs, Qingdao 266003, Peoples R China
Li, Pinglin
Li, Guoqiang
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Ocean Univ China, Sch Med & Pharm, Chinese Minist Educ, Key Lab Marine Drugs, Qingdao 266003, Peoples R China
Qingdao Natl Lab Marine Sci & Technol, Lab Marine Drugs & Bioprod, Qingdao, Shandong, Peoples R ChinaOcean Univ China, Sch Med & Pharm, Chinese Minist Educ, Key Lab Marine Drugs, Qingdao 266003, Peoples R China
机构:
Univ Tokyo, Grad Sch Agr & Life Sci, Lab Aquat Nat Prod Chem, Bunkyo Ku, Tokyo 1138657, JapanUniv Tokyo, Grad Sch Agr & Life Sci, Lab Aquat Nat Prod Chem, Bunkyo Ku, Tokyo 1138657, Japan
Fusetani, N
Fujita, M
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机构:Univ Tokyo, Grad Sch Agr & Life Sci, Lab Aquat Nat Prod Chem, Bunkyo Ku, Tokyo 1138657, Japan
Fujita, M
Nakao, Y
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机构:Univ Tokyo, Grad Sch Agr & Life Sci, Lab Aquat Nat Prod Chem, Bunkyo Ku, Tokyo 1138657, Japan
Nakao, Y
Matsunaga, S
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机构:Univ Tokyo, Grad Sch Agr & Life Sci, Lab Aquat Nat Prod Chem, Bunkyo Ku, Tokyo 1138657, Japan
Matsunaga, S
van Soest, RWM
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机构:Univ Tokyo, Grad Sch Agr & Life Sci, Lab Aquat Nat Prod Chem, Bunkyo Ku, Tokyo 1138657, Japan
机构:
Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, IL-69978 Tel Aviv, IsraelTel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, IL-69978 Tel Aviv, Israel
Rudi, A
Benayahu, Y
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Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, IL-69978 Tel Aviv, IsraelTel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, IL-69978 Tel Aviv, Israel
Benayahu, Y
Kashman, Y
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Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, IL-69978 Tel Aviv, IsraelTel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, IL-69978 Tel Aviv, Israel