Download Optical Resolution Procedures for Chemical Compounds/ Vol. 4. Compounds Containing a Sulfur or Selenium Stereocenter. Pt. 1 eBook
by Paul Newman
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Compounds Containing a Sulfur or Selenium Sterocenter/Volume 4 (Optical Resolution Procedures for Chemical Compounds).
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Optical Resolution Information Center, Manhattan College, [1978-. Physical description.
Cytotoxicity to K-562 leukemia cell line of two spiro compounds containing selenium or sulfur atom in their structure .
Cytotoxicity to K-562 leukemia cell line of two spiro compounds containing selenium or sulfur atom in their structure were compared. It was found that the introduction of a sulfur atom is more promising for this biological model, since it leads to a 3-fold increase in the therapeutic index in the case of the sulfur-containing compound. 1,3-selenazine derivatives 1,3-thiazine derivatives K-562 chronic myeloid leukemia cell line.
Many heterocyclic compounds containing fluorine or fluorocarbon groups are either in use or under active investigation in the field of chemotherapy and agrochemicals. Fragmentation and rearrangement process are also discussed. New materials, fuels, and other items for military and spaceflight applications have always played an important role in fluorine chemistry. Other high-priority interests, such as fluoropolymers and chlorofluorocarbons, have helped industry to develop many commercial products over the years.
Sulfur-containing tetrasubstituted carbon stereocenters are widely present in natural products, drugs, and biologically active compounds. In the first approach, alkynoate derivatives and 5-arylidene-3-(tert-butyl)-4-one react in the presence of PBu3 through a cycloaddition to afford -rhodanines in high yields (up to 99%) and with excellent es. In the second approach, the sequential /[.
Newman, P. Optical Resolution Procedures for Chemical Compounds, (1978) Vol. 1, Amines and Related Compounds, (1981) Vol. 2, Acid, (1984) Vol. 3, Alcohols, Phenols, Thiols, Aldehydes and Ketones, Optical Resolution Information Center, New York. It might be mentioned in passing that a recent study (80) on microbial reduction of ( )-60 with Rhodotorula rubra offered a convenient method for its optical resolution in that the microbe preferentially reduced the (- )-( )-enantiomer and left (+)-(R)-ketone intact with 58% optical purity.