142785-61-3Relevant academic research and scientific papers
Novel procedure for the preparation of 1α,3β-dihydroxy-2 β-tritiated steroidal compounds
Watanabe, Hiroyoshi,Kawanishi, Takehiko,Miyamoto, Katsuhito,Kubodera, Noboru,Sasahara, Kazuo,Ochi, Kiyoshige
, p. 444 - 446 (1992)
A novel procedure for the preparation of 1α,3β-dihydroxy-2β-tritiated steroidal compounds by the reduction of the α-epoxide with sodium horotritiide in diglyme at 80 C is described.
Industrial synthesis of maxacalcitol, the antihyperparathyroidism and antipsoriatic vitamin D3 analogue exhibiting low calcemic activity
Shimizu, Hitoshi,Shimizu, Kazuki,Kubodera, Noboru,Mikami, Tetsuhiro,Tsuzaki, Kaname,Suwa, Hiroyuki,Harada, Koji,Hiraide, Akira,Shimizu, Motoki,Koyama, Kaichiro,Ichikawa, Yoshihide,Hirasawa, Daisuke,Kito, Yasushi,Kobayashi, Mio,Kigawa, Masaharu,Kato, Masahiro,Kozono, Toshiro,Tanaka, Hideki,Tanabe, Makoto,Iguchi, Masanori,Yoshida, Mitsutaka
, p. 278 - 287 (2012/12/24)
Maxacalcitol, the 22-oxa-derivative of 1α,25-dihydroxyvitamin D 3 and used currently as an antihyperparathyroidism and antipsoriatic drug, has been synthesized in seven chemical steps from 1α- hydroxydehydroepiandrosterone on the basis of our previously developed route. The present synthesis allows the production of the protected form of the penultimate intermediate in 26% overall yield in a kilogram scale reaction employing neither difficult reaction conditions nor chromatographic purification, having overcome all the difficulties involved in the previous route.
22-oxacholecalciferol derivative and process for preparing the same
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, (2008/06/13)
A 22-oxacholecalciferol derivative represented by formula (I): STR1 wherein R1 represents a hydrogen atom or a hydroxyl group; and R2 and R3, which may be the same or different, each represent a lower alkyl group having fr
Synthesis of tritiated 1α,25-dihydroxy-22-oxavitamin D3
Watanabe,Akiyama,Kawanishi,Kubodera
, p. 645 - 654 (2007/10/02)
Synthesis of two tritiated 1α,25-dihydloxy-22-oxavitamin D3 (OCT), [26-3H3]OCT (3) and [2β-3H]OCT (4), is described. [26-3H3]OCT (3) was prepared by tritiation at the side chain with tritia
Synthetic studies of vitamin D analogues. XI. Synthesis and differentiation-inducing activity of 1α-25-dihydroxy-22-oxavitamin D3 analogues
Kubodera,Watanabe,Kawanishi,Matsumoto
, p. 1494 - 1499 (2007/10/02)
Six analogues of 1α,25-dihydroxy-22-oxavitamin D3 (OCT) (2), 26,27-dimethyl OCT (5), 26,27-diethyl OCT (6), 24-norOCT (7), 24-homoOCT (8), 24-dihomoOCT (9), and 24-trihomoOCT (10) were synthesized from the 20(S)-alcohol (11) as the common start
Production and specificity of anti-22-oxacalcitriol antisera
Kobayashi,Asano,Kitahori,Shimada,Kubodera,Watanabe
, p. 1520 - 1522 (2007/10/02)
22-Oxacalcitriol 3-hemiglutarate, a haptenic derivative of 22-oxacalcitriol, was synthesized to obtain a specific antibody for use in radioimmunoassay. Three antisera were elicited in rabbits against the hapten conjugated with bovine serum albumin, and th
