Synthesis of desmosterol and epidesmosterol from hyodeoxycholic acid
摘要:
A new synthesis of desmosterol was described using hyodeoxycholic acid (3alpha,6alpha-dihydroxy-5beta-cholanic acid) as a starting material. Epidesmosterol (3alpha-hydroxycholesta-5,24-diene) was also synthesized for the first time from the same starting material.
Synthesis of desmosterol and epidesmosterol from hyodeoxycholic acid
摘要:
A new synthesis of desmosterol was described using hyodeoxycholic acid (3alpha,6alpha-dihydroxy-5beta-cholanic acid) as a starting material. Epidesmosterol (3alpha-hydroxycholesta-5,24-diene) was also synthesized for the first time from the same starting material.
Steroid derivatives and process for preparing the same
申请人:Chugai Seiyaku Kabushiki Kaisha
公开号:US04225524A1
公开(公告)日:1980-09-30
Steroid derivatives represented by the formula ##STR1## wherein R.sup.1 and R.sup.2 are as defined hereunder which is useful for easily producing a wide variety of active vitamin D, and a process for preparing the same are disclosed.
Substituierte 5-Phenylcarbamoyl-barbitursäuren, Verfahren zu ihrer Herstellung und ihre Verwendung als Insektizide
申请人:BAYER AG
公开号:EP0007541A1
公开(公告)日:1980-02-06
Die vorliegende Erfindung betrifft neue substituierte 5-Phenylcarbamoyl- barbitursäuren der allgemeinen Formel
in welcher R1, R2, R3, X, Y, n die in der Beschreibung angegebene Bedeutung haben und deren Salze mit physiologisch verträglichen Basen. Sie weisen starke die Entwicklung von Insekten inhibierende Wirkung auf. Sie werden erhalten, indem man Barbitursäuren der Formel
mit Isocyanaten der Formel
umsetzt.