Nts of escalating polarity (from petroleum ether to MeOH) to yield
Chemexpress Nts of rising polarity (from petroleum ether to MeOH) to yield 9 fractions (Fr.1 r.9). Fr.1 was subjected to Sephadex LH-20 (acetone) and preparative-TLC to afford 2 (4.five mg). Fr.3…