38965-80-9Relevant academic research and scientific papers
A facile method for the preparation of α-methylene-γ-butyrolactones from tulip tissues by enzyme-mediated conversion
Kato, Yasuo,Yoshida, Hiroyuki,Shoji, Kazuaki,Sato, Yukio,Nakajima, Noriyuki,Ogita, Shinjiro
scheme or table, p. 4751 - 4753 (2011/03/18)
We developed a facile method of enzyme-mediated conversion of 6-tuliposide to α-methylene-γ-butyrolactone (tulipalin). We used a tuliposide-converting enzyme for the conversion of 6-tuliposides extracted from tulip tissues into the corresponding tulipalins in high yields within 2 h at pH 7.0. The resulting tulipalins were selectively extracted by using several organic solvents.
Purification and characterization of a tuliposide-converting enzyme from bulbs of tulipa gesneriana
Kato, Yasuo,Shoji, Kazuaki,Ubukata, Makoto,Shigetomi, Kengo,Sato, Yukio,Nakajima, Noriyuki,Ogita, Shinjiro
experimental part, p. 1895 - 1897 (2010/03/25)
An enzyme that catalyzes the stoichiometric conversion of 6-tuliposide into tulipalin was purified and characterized from bulbs of Tulipa gesneriana. The enzyme appeared to be a dimer, the relative molecular mass (Mr) of each subunit being 34,900; it had maximum activity and stability at neutral pH and moderate temperature. The enzyme preferentially acted on such glucose esters as 6-tuliposides, and to a lesser extent on /7-nitrophenylacetate.
First total synthesis of 6-tuliposide B
Shigetomi, Kengo,Kishimoto, Takao,Shoji, Kazuaki,Ubukata, Makoto
, p. 1443 - 1448 (2008/12/20)
Labile (+)-6-tuliposide B, an antimicrobial compound produced by tulip, was synthesized in nine steps from d-glucose via the Baylis-Hillman reaction of 2-(tert-butyldimethylsilyloxy)-acetaldehyde with 6-O-acryloyl-1-O-(2-trimethylsilylethyl)-β-d-glucopyranoside, followed by a mild deprotection procedure using TFA in CH2Cl2.
Synthesis of (-)-tuliparin B utilizing 2-bromo-1-alkenes conveniently synthesized from the 3-0-substituted 1,2-dibromoalkane system by regioselective elimination
Ohgiya, Tadaaki,Nishiyama, Shigeru
, p. 2349 - 2354 (2007/10/03)
Synthesis of (-)-tulipalin B with a variety of biological properties including cutaneous allergenic activity, was accomplished by using the 2-bromo-1-alkenes synthesized by the regioselective HBr elimination reaction of 3-acyloxy-1,2-dibromoalkanes.
The asymmetric Baylis-Hillman reaction as a template in organic synthesis
Brzezinski, Linda Joy,Rafel, Sara,Leahy, James W.
, p. 16423 - 16434 (2007/10/03)
The Bayils-Hillman reaction of camphor-based acrylates has been demonstrated to result in the formation of products with high optical purity. A model that explains these results and the use of these products in the formation of anti aldol adducts is discu
Use of Enzymatic Hydrolysis of Dimethyl Malates for a Short Synthesis of Tulipalin B and of Its Enantiomer
Papageorgiou, Christos,Benezra, Claude
, p. 1144 - 1145 (2007/10/02)
Pig liver esterase (PLE) hydrolyzes the ester function α to the hydroxyl group in dimethyl malate.This regiospecific reaction was used to synthesize (+)- and (-)-tulipalin B.
