Enantioselective Total Synthesis of the Reported Structures of (−)-9-epi-Presilphiperfolan-1-ol and (−)-Presilphiperfolan-1-ol: Structural Confirmation and Reassignment, New Biosynthetic Insights
نویسندگان
چکیده
Presilphiperfolanols (also known as prebotrydials) are members of a family of natural products that are important biosynthetic precursors to diverse sesquiterpenoids (Figure 1).[i, ii, iii, iv] To date, four members of the group have been isolated: presilphiperfolan-1-ol (1),[v] 9-epi-presilphiperfolan-1-o l (2),[vi] presilphiperfolan-8-ol (3),[ii] and presilphiperfolan-9-ol (4),[vii] with 1 and 2 being the most recently disclosed (Figure 1A).
منابع مشابه
Enantioselective total synthesis of the reported structures of (-)-9-epi-presilphiperfolan-1-ol and (-)-presilphiperfolan-1-ol: structural confirmation and reassignment and biosynthetic insights.
متن کامل
Cellulose/Fe3O4/Co3O4 Nanocomposite as a Highly Efficient and Reusable Catalyst for the Synthesis of 1-((Benzo[d]thiazol-2-ylamino)(aryl)-methyl)naphthalen-2-ol Derivatives
Magnetic Cellulose/Fe3O4/Co3O4 nanocomposite as a new catalyst was synthesized and characterized by FT-IR, XRD, TGA, SEM, TEM, ICP-AES and VSM techniques. The catalytic activity of this heterogeneous catalyst was studied through one-pot synthesis of 1-((benzo[d]thiazol-2-ylamino)(aryl)-methyl)naphthalen-2-ol derivatives from three component reactions of aromatic aldehydes, 2-aminobenzothiazole,...
متن کاملSynthesis, Radioiodination and Biodistribution Evaluation of 5-(2-amimo-4-styryl pyrimidine-4-yl)-4-methoxybenzofuran-6-ol
This study describes the organic synthesis of 5-(2-amimo-4-styryl pyrimidine-4-yl)-4-methoxy benzofuran-6-ol (SPBF) as an example of a benzofuran derivative used as a new series of amyloid imaging agents. These benzofuran derivatives may be useful amyloid imaging agents for detecting B-amyloid plagues in the brain of Alzheimer’s disease. The precursor is 1-[6-hydroxy-4-methoxybenzofuran-5-yl]-p...
متن کاملSynthesis and characterization of new (2E,2'E)-3,3'-(((3-hydroxypropane-1,2-diyl)bis(oxy))bis (2,1-phenylene))bis(1-phenylprop-2-en-1-one) and its transformation into 2,3-bis(2-(1,3-diphenyl-4,5-dihydro-1H-pyrazol-5-yl)phenoxy)propan-1-ol
In this paper, new (2E, 2'E)-3, 3'-(((3- hydroxypropane-1, 2-diyl) bis (oxy)) bis (2, 1-phenylene)) bis (1-phenylprop-2-en-1-one) (2a) was prepared in good yield by condensation reaction of acetophenone with bisaldehyde (1a) in ethanolic NaOH solutions at room temperature. The (2E, 2'E)-3, 3'-(((3- hydroxypropane-1, 2-diyl) bis (oxy)) bis (2, 1-phenylene)) bis (1-phenylprop-2-en-1-one) (2a) was...
متن کاملInhibition of Sterol Biosynthesis in Chlorella sorokiniana by Triparanol.
When Chlorella sorokiniana was cultured in the presence of 1 mg/1 triparanol succinate, there was a 42% reduction in total sterol concentration. Algal biomass was reduced by approximately the same amount. In addition to the cycloartenol, cyclolaudenol, 24-methyl-pollinastanol, ergosta-5, 7-dien-3beta-ol, and ergosterol that occur in control culture, pollinastanol, 14alpha-methyl-5alpha-ergost-8...
متن کامل