https://www.selleckchem.com/products/acbi1.html
Five new 2-nor-bicyclic polyprenylated acylphloroglucinols (BPAPs), norhyperpalums A-E (1-5), three new 2,3-nor-BPAPs, norhyperpalums F-H (8-1, one new 2,3,4-nor-BPAP (13), and four known analogs (6, 7, 11 and 12) were obtained from Hypericum patulum. Their structures were confirmed by spectroscopic data, electronic circular dichroism (ECD) calculations and comparisons, quantum-chemical 13C NMR calculations with DP4 + probability analysis, the modified Mosher's method, Rh2(OCOCF3)4-induced ECD, and X-ray crystallographic data. Norhyperp
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