Reference

Engineering of electronic structure of boron-nitride nanotubes by covalent functionalization

All Rights Reserved.Some chemicals with cas registry numbers like 141-75-3 and 112-76-5 are also used. Engineering of electronic structure of boron-nitride nanotubes by covalent functionalization. Zhi, Chunyi; Bando, Yoshio; Tang, Chengchun; Golberg, Dmitri ( Nanoscale Materials Center, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan). Physical Review B: Condensed Matter and Materials Physics, 74(15), 153413/1-153413/4 (English) 2006 American Physical Society. CODEN: PRBMDO. ISSN: 1098-0121. DOCUMENT TYPE: Journal CA Section: 73 (Optical, Electron, and Mass Spectroscopy and Other Related Properties) Electronic structure of boron-nitride nanotubes (BNNTs) can be tuned in a wide range through covalent functionalization, as exptl. and theor. evidenced. Various functional groups were covalently attached to BNNTs. The UV-visible absorption spectra indicate that the electronic structure of BNNTs drastically changes under functionalization. First-principle calcns. reveal that the covalently functionalized BNNTs can be either n- or p-doped depending on the electronegativity of mols. attached, and their energy gap can be adjusted from UV to visible optical range by varying concn. of functionalized species. .

Preparation of cyanopyrrole-phenyl as progesterone receptor modulators and therapeutic uses thereof

McComas, Casey Cameron; Fensome, Andrew; Melenski, Edward George (Wyeth, John, and Brother Ltd., USA). U.S. Pat. Appl. Publ. US 2007027125 A1 1 Feb 2007, 17pp. (English). (United States of America). CODEN: USXXCO. INCL: 514171000; 514408000; 548561000; 514422000; 548517000. APPLICATION: US 2006-494069 27 Jul 2006. PRIORITY: US 2005-704008P 29 Jul 2005. DOCUMENT TYPE: Patent CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) Section cross-reference(s): 1, 2 Progesterone receptor modulators of formula I, or a pharmaceutically acceptable salt thereof, wherein R1 = H, CN, C(O)-C1-C6 alkyl, C(O)-C3-C6 cycloalkyl, etc.Several substances with their cas registry numbers 921631-49-4 and 141-75-3 may be metioned in this study.; R2 = H, C1-C6 alkyl, substituted C1-C6 alkyl, and C3-C6 cycloalkyl; R3, R4, R5 and R6 = H, halo, C1-C6 alkyl, substituted C1-C6 alkyl, etc.; R7 = H, C1-C6 alkyl, substituted C1-C6 alkyl, etc., are claimed. These compds. are useful for contraception and hormone replacement therapy. Also provided are products contg. these compds. Example compd. II, prepd. from 4-bromoaniline and 1-methyl-5-cyano-2-pyrroleboronic acid, had an IC50 of 108.9 nM as a progesterone receptor antagonist in the T47D cell alk. phosphatase assay. .