CAS: 3859-41-4; Cyclopentane-1,3-Dione

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4-环戊烯-1,3-二酮置于溶剂黄146,锌体系中,化学反应生成1,3-环戊二酮
参考文献:Perhydroindanone Derivatives. I. Applicability Of The Diels-Alder Reaction
标题:Perhydroindanone Derivatives. I. Applicability Of The Diels-Alder Reaction
摘要:
Doi:10.1021/jo01036A005

专利信息

专利号:US-4958037-A
优先权日:1985-07-29
标题 :Precursors and synthesis of methyl-9-oxo-11α, 16-dihydroxy-16-vinyl-5-cis-13-trans-prostadienoates
发明人：FLOYD JR MIDDLETON B
权利人:AMERICAN CYANAMID CO
摘要:Novel precursors for the synthesis of methyl-9-oxo-11 alpha ,16-dihydroxy-16-vinyl-5-cis-13-trans prostadienoates having the formulae (2) (3) (4a) (4b) wherein R1 is H or C1-C4 alkyl; R2 is C1-C4 alkyl, R3 is H, C1-C4 trialkylsilyl or C1-C6 alkyl; X1 is halogen, cyano, C1-C4 alkoxycarbonyl, carboxy or tri (C1-C4 alkoxy)methyl; n is 2-4 inclusive; and P1 is H or a blocking or protective group; congeners and racemic mixture of these compounds and processes of synthesizing them.

专利号:US-4201869-A
优先权日:1970-12-21
标 题:Intermediates for steroid total synthesis process utilizing asymmetric induction
发明人：COHEN NOAL; SAUCY GABRIEL
权利人:HOFFMANN LA ROCHE
摘要:A multi-step, stereospecific total synthesis of steroids is disclosed. The starting materials for this process are the relatively inexpensive and readily available m-alkoxy acetophenones. The process is suitable for the preparation of racemic or optically active, medicinally valuable steroids, particularly A-ring aromatic steroids. This process features an early optical resolution and a unique asymmetric induction which insures the correct stereochemistry of the final steroidal product.

专利号:US-4092483-A
优先权日:1973-10-16
标题 :Intermediates for steroid total synthesis process utilizing asymmetric induction
发明人：COHEN NOAL; SAUCY GABRIEL
权利人:HOFFMANN LA ROCHE
摘要:A multi-step, stereospecific total synthesis of steroids is disclosed. The starting materials for this process are the relatively inexpensive and readily available m-alkoxy acetophenones. The process is suitable for the preparation of racemic or optically active, medicinally valuable steroids, particularly A-ring aromatic steroids. This process features an early optical resolution and a unique asymmetric induction which insures the correct stereochemistry of the final steroidal product.

专利号:US-3959322-A
优先权日:1960-09-22
标 题:Synthesis of 13-alkyl-gon-4-ones
发明人：HUGHES GORDON ALAN; SMITH HERCHEL
权利人:SMITH HERCHEL
摘要:The preparation of 13-methylgon-4-enes and novel 13-polycarbonalkylgon-4-enes by a new total synthesis is described. 13-Alkylgon-4-enes having progestational, anabolic and androgenic activities are prepared by forming a tetracylic gonane structure unsaturated in the 1,3,5(10),9(11) and 14-positions, selectively reducing in the B- and C-rings, and converting the aromatic A-ring compounds so-produced to gon-4-enes by Birch reduction and hydrolysis.

专利号:US-4102925-A
优先权日:1970-12-21
标题:Steroid total synthesis process utilizing asymmetric induction
发明人：COHEN NOAL; SAUCY GABRIEL
权利人:HOFFMANN LA ROCHE
摘要:A multi-step, stereospecific total synthesis of steroids is disclosed. The starting materials for this process are the relatively inexpensive and readily available m-alkoxy acetophenones. The process is suitable for the preparation of racemic or optically active, medicinally valuable steroids, particularly A-ring aromatic steroids. This process features an early optical resolution and a unique asymmetric induction which insures the correct stereochemistry of the final steroidal product.

专利号:US-4011211-A
优先权日:1973-10-16
标题:Steroid total synthesis process utilizing asymmetric induction
发明人：COHEN NOAL; SAUCY GABRIEL
权利人:HOFFMANN LA ROCHE
摘要:A multi-step, stereospecific total synthesis of steroids is disclosed. The starting materials for this process are the relatively inexpensive and readily available m-alkoxy aceto-phenones. The process is suitable for the preparation of racemic or optically active, medicinally valuable steroids, particularly A-ring aromatic steroids. This process features an early optical resolution and a unique asymmetric induction which insures the correct stereochemistry of the final steroidal product.