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JOURNAL OF NATURAL P 104 HELVETICA CHIMICA AC 92 JOURNAL OF ASIAN NAT 49
ORGANIC LETTERS 43 PHYTOCHEMISTRY 40 TETRAHEDRON LETTERS 34
CHEMICAL & PHARMACEU 31 TETRAHEDRON 24 CHINESE JOURNAL OF C 14
ZEITSCHRIFT FUR NATU 14 STEROIDS 10 CHEMISTRY OF NATURAL 8
BIOORGANIC & MEDICIN 6 JOURNAL OF THE BRAZI 6 JOURNAL OF AGRICULTU 5
CHEMICAL COMMUNICATI 4 CHEMISTRY-A EUROPEAN 4 ANGEWANDTE CHEMIE-IN 2
CHEMISTRY LETTERS 2 EUROPEAN JOURNAL OF 2