60202-70-2

Basic information

• Product Name: Benzoic acid,2-[(5,10-dihydro-3,7,8-trihydroxy-5,10-dioxo[1]benzopyrano[5,4,3-cde][1]benzopyran-2-yl)oxy]-3,4,5-trihydroxy-
• Synonyms: [1]Benzopyrano[5,4,3-cde][1]benzopyran,benzoic acid deriv.; Valoneaic acid dilactone; Valoneic acid bislactone;Valoneic acid dilactone
• CAS NO: 60202-70-2
• Molecular Formula: C21H10 O13
• Molecular Weight: 470.303
• Mol File: 60202-70-2.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: Benzoic acid,2-[(5,10-dihydro-3,7,8-trihydroxy-5,10-dioxo[1]benzopyrano[5,4,3-cde][1]benzopyran-2-yl)oxy]-3,4,5-trihydroxy-(CAS DataBase Reference)
• NIST Chemistry Reference: Benzoic acid,2-[(5,10-dihydro-3,7,8-trihydroxy-5,10-dioxo[1]benzopyrano[5,4,3-cde][1]benzopyran-2-yl)oxy]-3,4,5-trihydroxy-(60202-70-2)
• EPA Substance Registry System: Benzoic acid,2-[(5,10-dihydro-3,7,8-trihydroxy-5,10-dioxo[1]benzopyrano[5,4,3-cde][1]benzopyran-2-yl)oxy]-3,4,5-trihydroxy-(60202-70-2)

Safety Data

• Hazardous Substances Data: 60202-70-2(Hazardous Substances Data)

Upstream product

• 142542-86-7 C₆₈H₅₀O₄₄ 

Downstream Products

• 872296-21-4 1-benzyl-2,3,7,8-tetrakis-benzyloxy-chromeno[5,4,3-cde]chromene-5,10-dione 

Relevant articles and documents

A dimeric hydrolysable tannin from Camellia oleifera

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Tannins and related polyphenols of melastomataceous plants. III. Nobotanins G, H and I, dimeric hydrolyzable tannins from Heterocentron roseum

Three new hydrolyzable tannin dimers, nobotanins G (6), H (12) and I (13), have been isolated from the leaves of Heterocentron roseum (Melastomataceae), and their structures were elucidated on the basis of chemical degradations and nuclear magnetic resonance spectral analyses. Nobotanin I (13) is a novel dimer possessing a depsidone-forming valoneoyl group in the molecule. Five known tannins, casuarictin (1), strictinin (2), geraniin (3), and nobotanins B (4) and F (5), were also isolated.

Structure of isorugosin b, and the orientation of valoneoyl group in the related monomeric, dimeric and trimeric hydrolyzable tannins

A new hydrolyzable tannin, named isorugosin B (1), was isolated from Liquidambar formosana, and the structure in which the orientation of valoneoyl group at 0-4 ~ 0-6 of the glucose core is the reverse of that in rugosin B (2) and in rugosin A (3), was determined. The orientation of valoneoyl group in rugosin A (3) was established by the long range 1H13C correlation nmr spectroscopy. The structures of rugosins D (6), E (7) and G (8), coriariins C (9), D (10), E (11) and F (12), cornusiin A (13), camptothins A (b15) and B (16), were fully established on the basis of chemical correlations with 1 or 3.