منابع مشابه
Evolution of the key alkaloid enzyme putrescine N-methyltransferase from spermidine synthase
Putrescine N-methyltransferases (PMTs) are the first specific enzymes of the biosynthesis of nicotine and tropane alkaloids. PMTs transfer a methyl group onto the diamine putrescine from S-adenosyl-l-methionine (SAM) as coenzyme. PMT proteins have presumably evolved from spermidine synthases (SPDSs), which are ubiquitous enzymes of polyamine metabolism. SPDSs use decarboxylated SAM as coenzyme ...
متن کاملCatalysis-based enantioselective total synthesis of the macrocyclic spermidine alkaloid isooncinotine.
A concise and efficient total synthesis of the spermidine alkaloid (-)-isooncinotine (1) incorporating a 22-membered lactam ring is outlined. The approach is largely catalysis-based, involving a selective iron-catalyzed alkyl-aryl cross-coupling reaction of a difunctionalized pyridine substrate, a heterogeneous asymmetric hydrogenation step to set the chiral center of the target, and a highly i...
متن کاملRhizome Extract from Kaempferia parviflora Wall. ex. Baker Induces Apoptosis
Kaempferia parviflora Wall. ex. Baker is a member of the ginger family (Zingiberaceae). In folk medicine of Suriname and Southeast Asia, rhizome is used for treatment of swelling, wounds and diarrhea colic disorder, and as an aphrodisiac (Yenjai et al., 2004). Rhizomes of fingerroot or K. parviflora Wall. ex. Baker are used as food ingredients and made into wine (Nagahara et al., 2002). Alcohol...
متن کاملAntibacterial activity of secondary metabolites from Fumaria parviflora Lam
We report the antibacterial activity of the plant extracts and three previously isolates known compounds viz., nonacosane-10-ol (alcohol), 23a-homostigmast-5-en-3ß-ol (homolog of β-sterol) and cisand trans-prtopinium (alkaloid) of Fumaria parviflora Lam (Fumariaceae) for the first time. Plant extracts and pure compounds were in vitro assessed against seven clinical Gram (-) and Gram (+) bacteri...
متن کاملFlavonoids and a new polyacetylene from Bidens parviflora Willd.
Fifteen flavonoids, 1-7 and 9-16, and a polyacetylene, 8, were isolated from the ethanol extract of the dried whole plant of Bidens parviflora Willd. by various chromatographic techniques. Their structures have been elucidated on the basis of spectroscopic analyses and chemical studies. Compound 8 is new and was identified as 3-(R),8(E)-decene-4,6-diyne-1,3,10-triol. All the flavonoid compounds...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Revista Brasileira de Farmacognosia
سال: 2016
ISSN: 0102-695X
DOI: 10.1016/j.bjp.2016.06.003