A Conversion of 4α-Bromoshionan-3-one into D : B-Friedobacchara-1,5(10)-dien-3-one and A Preparation of D : B-Friedo-bacchar-5(10)-en-3-one

24-Methyl­lanosta-7,25-dien-3-one

THE TITLE COMPOUND [SYSTEMATIC NAME: 17-(5,6-di-methyl-hept-6-en-2-yl)-4,4,10,13,14-penta-methyl-1,5,6,10,11,12,13,15,16,17-deca-hydro-2H-cyclo-penta-[α]phenanthren-3(4H,9H,14H)-one], C(31)H(50)O, is a triterpenoid which was isolated from Skimmia laureola. The three six-membered rings adopt chair, slightly distorted half-chair and distorted boat conformations, and the five-membered ring is in a...

5α-Pregna-1,20-dien-3-one

The title compound, C(21)H(30)O, was isolated from the soft coral Sinularia sp. The mol-ecule contains four alicyclic rings, all trans-fused, among which three six-membered rings are in different distorted chair conformations while a five-membered ring assumes an envelope form.

Tetra-N-Butyl ammonium hydroxide mediated one-pot synthesis of pyrano [2, 3-d] pyrimidinone Derivatives

Tetra-N-Butyl Ammonium Hydroxide was used as a catalyst for one-pot, three component condensation reactions consisting of aromatic aldehydes, malononitrile and barbituric acid in ethanol:water solvent system at 60oC. Current method has major advantages like mild reaction conditions with simple operation, high yields, by using a less toxic and lower costlier catalyst.In conclusion, we have explo...

Metabolism of Cholesta-4,7-dien-3-one and Cholesta-4,6-dien-3-one by Mouse Liver Microsomes.

Generation of a 3-D Face Model from One Camera