Takahashi M - Search Results

1

Preparation and structural elucidation of the picolinyl ester of aldosterone for liquid chromatography-electrospray ionization tandem mass spectrometry.

Yamashita K, Tadokoro Y, Takahashi M, Numazawa M. Yamashita K, et al. Among authors: takahashi m. Chem Pharm Bull (Tokyo). 2008 Jun;56(6):873-7. doi: 10.1248/cpb.56.873. Chem Pharm Bull (Tokyo). 2008. PMID: 18520101 Free article.

2

Use of novel picolinoyl derivatization for simultaneous quantification of six corticosteroids by liquid chromatography-electrospray ionization tandem mass spectrometry.

Yamashita K, Takahashi M, Tsukamoto S, Numazawa M, Okuyama M, Honma S. Yamashita K, et al. Among authors: takahashi m. J Chromatogr A. 2007 Nov 30;1173(1-2):120-8. doi: 10.1016/j.chroma.2007.10.023. Epub 2007 Oct 12. J Chromatogr A. 2007. PMID: 17964584

3

Simultaneous determination of tetrahydrocortisol, allotetrahydrocortisol and tetrahydrocortisone in human urine by liquid chromatography-electrospray ionization tandem mass spectrometry.

Yamashita K, Nakagawa R, Okuyama M, Honma S, Takahashi M, Numazawa M. Yamashita K, et al. Among authors: takahashi m. Steroids. 2008 Aug;73(7):727-37. doi: 10.1016/j.steroids.2008.02.009. Epub 2008 Feb 26. Steroids. 2008. PMID: 18394666

4

Development of sensitive derivatization method for aldosterone in liquid chromatography-electrospray ionization tandem mass spectrometry of corticosteroids.

Yamashita K, Okuyama M, Nakagawa R, Honma S, Satoh F, Morimoto R, Ito S, Takahashi M, Numazawa M. Yamashita K, et al. Among authors: takahashi m. J Chromatogr A. 2008 Jul 25;1200(2):114-21. doi: 10.1016/j.chroma.2008.05.034. Epub 2008 May 22. J Chromatogr A. 2008. PMID: 18561939

5

Development of highly sensitive quantification method for testosterone and dihydrotestosterone in human serum and prostate tissue by liquid chromatography-electrospray ionization tandem mass spectrometry.

Yamashita K, Miyashiro Y, Maekubo H, Okuyama M, Honma S, Takahashi M, Numazawa M. Yamashita K, et al. Among authors: takahashi m. Steroids. 2009 Nov;74(12):920-6. doi: 10.1016/j.steroids.2009.06.007. Epub 2009 Jul 2. Steroids. 2009. PMID: 19576916

6

Structure-activity relationships of 2alpha-substituted androstenedione analogs as aromatase inhibitors and their aromatization reactions.

Numazawa M, Handa W, Hasegawa C, Takahashi M. Numazawa M, et al. Among authors: takahashi m. J Steroid Biochem Mol Biol. 2005 Dec;97(4):353-9. doi: 10.1016/j.jsbmb.2005.06.029. Epub 2005 Oct 4. J Steroid Biochem Mol Biol. 2005. PMID: 16209922

7

Mass spectrometric analysis of oxygenations in aromatization of androst-4-ene-3,6,17-trione, a suicide substrate of aromatase, by placental microsomes. Isotope effect and stereochemistry.

Numazawa M, Takahashi M, Nagaoka M, Handa W, Yamashita K. Numazawa M, et al. Among authors: takahashi m. J Steroid Biochem Mol Biol. 2007 Nov-Dec;107(3-5):220-7. doi: 10.1016/j.jsbmb.2007.03.041. Epub 2007 Jun 22. J Steroid Biochem Mol Biol. 2007. PMID: 17651966

8

Chemical aromatization of 19-hydroxyandrosta-1,4-diene-3,17-dione with acid or alkaline: elimination of the 19-hydroxymethyl group as formaldehyde.

Numazawa M, Yamashita K, Kimura N, Takahashi M. Numazawa M, et al. Among authors: takahashi m. Steroids. 2009 Feb;74(2):208-11. doi: 10.1016/j.steroids.2008.10.011. Epub 2008 Oct 30. Steroids. 2009. PMID: 19022274

9

Probing the binding pocket of the active site of aromatase with 2-phenylaliphatic androsta-1,4-diene-3,17-dione steroids.

Takahashi M, Yamashita K, Numazawa M. Takahashi M, et al. Steroids. 2010 Apr;75(4-5):330-7. doi: 10.1016/j.steroids.2010.01.008. Epub 2010 Jan 22. Steroids. 2010. PMID: 20096721

10

Aromatase inactivation by 2-substituted derivatives of the suicide substrate androsta-1,4-diene-3,17-dione.

Takahashi M, Handa W, Umeta H, Ishikawa S, Yamashita K, Numazawa M. Takahashi M, et al. J Steroid Biochem Mol Biol. 2009 Sep;116(3-5):191-9. doi: 10.1016/j.jsbmb.2009.05.015. Epub 2009 Jun 9. J Steroid Biochem Mol Biol. 2009. PMID: 19520161

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