This assay was used to guide the fractionation of this extract and allowed the isolation of four compounds: the new naphthoquinone eleutherinone[8-methoxy-1-methyl-1,3-dihydro-naphtho(2,3-c)furan-4,9 ...

Compounds 2i-2j follows similar substitution patterns of the aromatic ring. The 1 H NMR spectrum showed four signals for aromatic hydrogens with different multiplicities. We observed the presence of a ...

China’s official Manufacturing Purchasing Managers' Index (PMI) eased to 50.1 in December, compared to 50.3 in the previous reading. The reading came in below the market consensus of 50.3 in the ...

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All Number 1s are special, but scoring the Official Christmas Number 1 is the ultimate prize. The festive top spot is a British institution and is often the most unpredictable chart race of the year.