A new pentacyclic triterpene, pinfaensin, was isolated from the roots of Rubus pinfaensis and the structure elucidated by C-13 NMR methods. This triterpene, a glycoside of pinfaensic acid (glucosyl 23-formyl-2 alpha,3 beta,19 alpha-trihydroxyurs-12-en-28-oate), in order to achieve purification and characterization, was hydrolysed to previously unreported pinfaensic acid which on acetylation and methylation gave methyl diacetoxypinfaensate (methyl 2 alpha,3 beta-diacetoxy-23-formyl-19 alpha-hydroxyurs-12-en-oate).
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Tokyo Univ Pharm & Life Sci, Lab Med Pharmacognosy, Sch Pharm, Tokyo 1920392, JapanTokyo Univ Pharm & Life Sci, Lab Med Pharmacognosy, Sch Pharm, Tokyo 1920392, Japan
Mimaki, Yoshihiro
Watanabe, Kazuki
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Aomori Univ, Fac Pharmaceut Sci, Aomori 0300943, JapanTokyo Univ Pharm & Life Sci, Lab Med Pharmacognosy, Sch Pharm, Tokyo 1920392, Japan
Watanabe, Kazuki
Matsuo, Yukiko
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Tokyo Univ Pharm & Life Sci, Lab Med Pharmacognosy, Sch Pharm, Tokyo 1920392, JapanTokyo Univ Pharm & Life Sci, Lab Med Pharmacognosy, Sch Pharm, Tokyo 1920392, Japan
Matsuo, Yukiko
Sakagami, Hiroshi
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Meikai Univ, Sch Dent, Dept Dent Pharmacol, Sakado, Saitama 3500283, JapanTokyo Univ Pharm & Life Sci, Lab Med Pharmacognosy, Sch Pharm, Tokyo 1920392, Japan
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Univ Bourgogne, Fac Pharm, UMIB, Lab Pharmacognosie,UPRES EA 3660, F-21079 Dijon, France
Univ Los Andes, Fac Ciencias, Dept Quim, Lab Prod Nat, Merida 5101, VenezuelaUniv Bourgogne, Fac Pharm, UMIB, Lab Pharmacognosie,UPRES EA 3660, F-21079 Dijon, France
Galarraga M, Elier
Mitaine-Offer, Anne-Claire
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Univ Bourgogne, Fac Pharm, UMIB, Lab Pharmacognosie,UPRES EA 3660, F-21079 Dijon, FranceUniv Bourgogne, Fac Pharm, UMIB, Lab Pharmacognosie,UPRES EA 3660, F-21079 Dijon, France
Mitaine-Offer, Anne-Claire
Manuel Amaro-Luis, Juan
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Univ Los Andes, Fac Ciencias, Dept Quim, Lab Prod Nat, Merida 5101, VenezuelaUniv Bourgogne, Fac Pharm, UMIB, Lab Pharmacognosie,UPRES EA 3660, F-21079 Dijon, France
Manuel Amaro-Luis, Juan
Miyamoto, Tomofumi
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Kyushu Univ, Grad Sch Pharmaceut Sci, Fukuoka 8128582, JapanUniv Bourgogne, Fac Pharm, UMIB, Lab Pharmacognosie,UPRES EA 3660, F-21079 Dijon, France
Miyamoto, Tomofumi
Pouysegu, Laurent
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Univ Bordeaux 2, CNRS, Inst Mol Sci, UMR 5255, F-33607 Pessac, France
Univ Bordeaux 2, Inst Europeen Chim Biol, F-33607 Pessac, FranceUniv Bourgogne, Fac Pharm, UMIB, Lab Pharmacognosie,UPRES EA 3660, F-21079 Dijon, France
Pouysegu, Laurent
Quideau, Stephane
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Univ Bordeaux 2, CNRS, Inst Mol Sci, UMR 5255, F-33607 Pessac, France
Univ Bordeaux 2, Inst Europeen Chim Biol, F-33607 Pessac, FranceUniv Bourgogne, Fac Pharm, UMIB, Lab Pharmacognosie,UPRES EA 3660, F-21079 Dijon, France
Quideau, Stephane
Rojas, Luis B.
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Univ Los Andes, Fac Ciencias, Dept Quim, Lab Prod Nat, Merida 5101, VenezuelaUniv Bourgogne, Fac Pharm, UMIB, Lab Pharmacognosie,UPRES EA 3660, F-21079 Dijon, France
Rojas, Luis B.
Lacaille-Dubois, Marie-Aleth
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Univ Bourgogne, Fac Pharm, UMIB, Lab Pharmacognosie,UPRES EA 3660, F-21079 Dijon, FranceUniv Bourgogne, Fac Pharm, UMIB, Lab Pharmacognosie,UPRES EA 3660, F-21079 Dijon, France