sarcomelicope megistophylla/alkaloid

Two new alkaloids were isolated from the bark of Sarcomelicope megistophylla. Cyclomegistine B (1), a new quinolone alkaloid, that possesses a rare cyclobuta[b]quinoline ring system and sarcomejine B (2) which is a quinolone alkaloid with an unusual side chain. The structure of both compounds was

Two new alkaloids, megistosarcimine and megistosarconine, were isolated from the aerial parts of Sarcomelicope megistophylla. Their structures have been elucidated on the basis of their spectral data and molecular modeling.

Two new alkaloids, megistophylline I (1) and megistophylline II (2), were isolated from the bark of Sarcomelicope megistophylla. Their structures have been elucidated on the basis of MS and NMR data.

A new quinolone alkaloid, megistolactone (1) was isolated from the bark of Sarcomelicope megistophylla. Its structure has been elucidated on the basis of MS and NMR data. From a biogenetic point of view, this compound should be considered as an oxidation product of 1,2,3,4-tetra-O-subsituted

Two alkaloids, furomegistine I (1) and furomegistine II (2), were isolated from the bark of Sarcomelicope megistophylla. Their structures have been elucidated on the basis of MS and NMR data. Both belong to the category of furanopyridine alkaloids and should be considered as oxidation products of a

Two alkaloids, megistoquinone I (1) and megistoquinone II (2), were isolated from the bark of Sarcomelicope megistophylla. Their structures have been elucidated on the basis of MS and NMR data. Both belong to quinoline alkaloid series and should be considered as oxidation products of a

Two new pyranofuroquinoline alkaloids, cis-1,2-dihydroxy-1,2 dihydroacronydine 2 and trans-1,2-dihydroxy-1,2-dihydroacronydine 3 have been isolated from Sarcomelicope dogniensis stem bark. Their structures have been elucidated by spectral analysis and chemical correlations. In addition, 11 other

Two new alkaloids, megistonine I (1) and megistonine II (2), were isolated from the bark of Sarcomelelicope megistophylla. Their structures, which are derived from the 3-methoxy-4-quinolone basic skeleton, were elucidated on the basis of MS and extensive NMR studies.

Sarcodifurines A and B are two original dihydrofuroquinolines isolated from Sarcomelicope follicularis, a New Caledonian tree. The cytotoxicity and antiproliferative activity of these two alkaloids were investigated against 8 distinct cell lines representative of the most frequent solid tumors

A new 4(1H)-quinolinone alkaloid, sarcomejine (1), has been isolated from the bark of Sarcomelicope megistophylla. Its structure has been elucidated on the basis of MS and NMR data and especially with a long-range (1)H-(15)N correlation NMR spectrum at natural abundance.