Investigation into the tuberculostatic activity of some aromatic hydroxy compounds

Two New Isoprenoid Flavonoids from Sophora flavescens with Antioxidant and Cytotoxic Activities

“…Finally, a total of 28 pure compounds were obtained, including two new compounds (Figure 1) together with 26 know ones (Figure 2). These constituents belong to flavanonols (1-4), chalcones (5-8), flavanones (9-13), flavonols (14)(15)(16), isoflavones (17)(18)(19)(20)(21), flavones (22)(23), and other structural types (24)(25)(26)(27)(28). The separation procedure was described in Support Information (Figure S1, Support Information).…”

“…The 26 known compounds were identified by comparison of NMR spectral data with those published in the literature. They were kushenol H (3) [14], kushenol L (4) [15], kuraridinol (5) [16], kuraridine (6) [15], xanthohumol (7) [17], isoliquiritigenin (8) [18], kushenol Q (9) [14], sophoraflavanone B (10) [14], naringenin (11) [19], kurarinol (12) [14], kushenol A(13) [6], sophoflavescenol (14) [17], noranhyoicaritin (15) [16], quercetin (16) [20], 7,3′-di-O-methyl (17) [21], genistein (18) [20], calycosin (19) [20], formononetin (20) [22], biochanin A (21) [22], 5,4′-dihydroxyflavone (22) [23], luteolin (23) [24], 7-hydroxycoumarin (24) [25], 7,8-dihydroxycoumarin (25) [25], 4-methoxysalicylic acid (26) [26], b-resorcylic acid (27) [26] and 4-hydroxybenzoic acid (28) [26]. The 26 known compounds were identified by comparison of NMR spectral data with those published in the literature.…”

Transannular Reactions in the Dibenzo[a,d]cycloheptene Series. V. Preparation of 10,11-Dihydro-5,10-(iminomethano)-5H-dibenzo[a,d]cycloheptenes

“…Nauta and his co-workers have substituted derivatives of 1. Despite the ready recently reported that borohydride treatment of addition of hydride ion to 2a, attempts to add 2a gave a tetracyclic product (5). The reduction secondary amines were unsuccessful.…”