Total synthesis, structural elucidation and anti-inflammatory activity evaluation of 2-deoxy-3,6-anhydro hexofuranoside derivatives isolated from Sauropus rostratus
2-deoxy-3,6-anhydro hexofuranoside derivatives, namely sauropunols (A–D), isolated from the traditional Chinese medicinal plant Sauropus rostratus was accomplished. Structures of sauropunols A and B were clearly elucidated and reassigned. The anti-inflammatory activities of sauropunols (A–D) as well as the synthetic intermediates were evaluated, which is valuable for further structure–activity relationship
Five unusual natural carbohydrates from Actinosynnema pretiosum
作者:Chunhua Lu、Linquan Bai、Yuemao Shen
DOI:10.1007/s10600-008-9140-x
日期:2008.9
Five unusual hexose derivatives were isolated from the carbohydrate portion of the solid-state fermentation extract of Actinosynnema pretiosum ssp. auranticum ATCC 31565, which is a producing strain of maytansinoids that are a family of 19-membered macrocyclic lactams having extraordinary cytotoxic and antineoplastic activities. Their structures were determined to be 2-deoxy-α-D-arabino-hexopyranose (1), 2-deoxy-β-D-arabino-hexopyranose (2), 3,6-anhydro-2-deoxy-α-D-arabino-hexcofuranose (3), 3,6-anhydro-2-deoxy-β-D-arabino-hexofuranose (4), and 2-(D-glycerol-1,2-dihydroxyethyl)furan (5) by NMR spectroscopic experiments.