[A novel alkaloid from Corydalis tomentella].

The chemical constituents in the ethyl acetate extract of Corydalis tomentella was isolated and purified with normal and reversed phase silica gel column chromatography, Sephadex LH-20, MCI, and semi-preparative HPLC. The compound structures were identified based on spectroscopic experiments and reported papers. Finally, eighteen compounds(1-18) were obtained from C.

Dolominol a and B, two new neolignans from (Franch.) C.Shih.

Two new neolignans, dolominol A (1) and dolominol B (2), together with 12 known lignans, -(7,8)-guaiacyl-glycerol--O-4'-dihydroconiferyl ether (3), -(7,​8)-1-​(4-​hydroxy-​3-​methoxyphenyl)​-​2-{4-[()-​3-​hydroxy-​1-​propen​yl)​]-​2-​methoxyphenoxy}-1,​3-​propanediol (4), (-)-dihydrodehydrodiconiferyl alcohol (5), (-)-massoniresinol (6), vladinol D (7), syringaresinol (8), prinsepiol (9), medioresinol (10), (+)-pinoresinol (11), 2-guaicyl-4-oxo-6-catechyl-3,7-dioxabicyclo [3.3.0]octane (12), cycloolivil (13), isolariciresinol (14) were isolated from (Franch.

Himalaflavone A-E, five new flavonoids from .

Five previously undescribed flavonoids (-) and ten known ones () were isolated from the roots of . Their structures were elucidated by spectroscopic experiments including NMR, HRESIMS and ECD. The cytotoxic activities of all isolated compounds were assayed against human lung carcinoma A549 cells and human hepatocellular carcinoma HepG2 cells .

A new neolignan glycoside from .

One new neolignan glycoside, dolomiside A (), together with 11 known phenylpropanoid glycosides were isolated from (Franch.) Shih. The structures of these isolates were determined by UV, CD, HR-ESI-TOFMS, 1D and 2D NMR analysis.

Bacillamidins A⁻G from a Marine-Derived .

Seven long-chain amides, including five previously undescribed bacillamidins A⁻E (⁻) and two previously reported synthetic analogs, bacillamidins F () and G (), were isolated from extracts of the marine-derived strain RJA1515. The structures of the new compounds were established by extensive analysis of 1D and 2D nuclear magnetic resonance (NMR) data as well as high resolution mass spectrometry (HRMS), and the absolute configurations of the stereogenic carbons of ⁻ were established by comparison of the calculated and the experimental electronic circular dichroism (ECD) spectra. The cytotoxic and antimicrobial activities of ⁻ were evaluated.