Two rings in them all: The labdane-related diterpenoids
نویسندگان
چکیده
منابع مشابه
Labdane diterpenoids and lignans from Calocedrus macrolepis.
Three new labdane diterpenoids, calomacrins A-C (1-3), and a new diaryl butyrolactone-type lignan, calomacrol A (8), as well as four known labdane diterpenoids and six known lignans, were isolated from the twigs and leaves of Calocedrus macrolepis. Structures of the new compounds were elucidated on the basis of their spectroscopic methods, including 1D and 2D NMR techniques. Compounds 3-14 were...
متن کاملLabdane-type diterpenoids from the fruits of Vitex trifolia.
Seven new labdane-type diterpenoids, vitextrifolins A-G (1-7), along with eight previously reported analogues, were isolated from the fruits of Vitex trifolia. The structures of 1-7 were elucidated by spectroscopic data interpretation. The isolates were evaluated for their cytotoxicity against four human cancer cell lines (A549, HCT116, HL-60, and ZR-75-30), but all were inactive (IC(50) < 5 μg...
متن کاملBiotransformation of labdane and halimane diterpenoids by two filamentous fungi strains
Biotransformation of natural products by filamentous fungi is a powerful and effective approach to achieve derivatives with valuable new chemical and biological properties. Although diterpenoid substrates usually exhibit good susceptibility towards fungi enzymes, there have been no studies concerning the microbiological transformation of halimane-type diterpenoids up to now. In this work, we in...
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Secondary indices are traditionally used in DBMS to increase the performance of queries that do not rely on the keys of the table for data reads. Many of the newer NoSQL distributed data stores, even if they provide a table-based data model such as HBase, however, do not yet have a secondary indexing feature built in. In this paper, we explore the challenges associated with indexing modern dist...
متن کاملSynthetic studies towards the ent-labdane diterpenoids: rearrangement of ent-halimanes.
For the first time ent-labdanes have been synthetised starting from ent-halimic acid, following a route that is the reverse of the biosynthetic one leading to the former compounds.
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ژورنال
عنوان ژورنال: Natural Product Reports
سال: 2010
ISSN: 0265-0568,1460-4752
DOI: 10.1039/c0np00019a