Inventor

HALKES SEBASTIANUS J

NL14 patents

⚠️ This page may combine multiple inventors who share the name “HALKES SEBASTIANUS J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DUPHAR INT RES

13 patents

US5637742AJun 10, 1997

Synthesis of C18 -modified vitamin D compounds and compounds resulting therefrom

DUPHAR INT RES12 citations71

US4539153ASep 3, 1985

Method of preparing 1 α-hydroxyvitamin D and 1 α-hydroxyprevitamin D compounds, and adducts of a previtamin D or tachysterol compound with a suitable dienophile

DUPHAR INT RES15 citations69

US5035783AJul 30, 1991

Method for the photochemical conversion of tachysterol compounds into previtamin D compounds and of trans-vitamin D compounds into cis-vitamin D compounds

DUPHAR INT RES12 citations68

US6080878AJun 27, 2000

Method of preparing 16-dehydro vitamin D compounds

DUPHAR INT RES13 citations66

US5110924AMay 5, 1992

Adduct-aldehyde and its use for the preparation of vitamin-d compounds

DUPHAR INT RES2 citations57

US5175217ADec 29, 1992

Method for the photochemical conversion of tachysterol compounds into previtamin D compounds and of trans-vitamin D compounds into cis-vitamin D compounds using a polymeric photoinitiator

DUPHAR INT RES0 citations36

US5395953AMar 7, 1995

Method of preparing hydrindane compounds and hydrindane-related compounds

DUPHAR INT RES0 citations30

KINGDOM OF THE NETHERLANDS

1 patent

US6288249B1Sep 11, 2001

Vitamin D analogs and methods of preparing these compounds

KINGDOM OF THE NETHERLANDS10 citations61

HALKES SEBASTIANUS J

DUPHAR INT RES

Vitamin D compound, method of preparing this compound and intermediate therefor

Vitamin D compounds and method of preparing these compounds

Vitamin D compound, method of preparing this compound and intermediate thereof

Vitamin D compounds and method of preparing these compounds

Vitamin D compounds and method of preparing these compounds

Vitamin D compounds and method of preparing these compounds

Synthesis of C18 -modified vitamin D compounds and compounds resulting therefrom

Method of preparing 1 α-hydroxyvitamin D and 1 α-hydroxyprevitamin D compounds, and adducts of a previtamin D or tachysterol compound with a suitable dienophile

Method for the photochemical conversion of tachysterol compounds into previtamin D compounds and of trans-vitamin D compounds into cis-vitamin D compounds

Method of preparing 16-dehydro vitamin D compounds

Adduct-aldehyde and its use for the preparation of vitamin-d compounds

Method for the photochemical conversion of tachysterol compounds into previtamin D compounds and of trans-vitamin D compounds into cis-vitamin D compounds using a polymeric photoinitiator

Method of preparing hydrindane compounds and hydrindane-related compounds

KINGDOM OF THE NETHERLANDS

Vitamin D analogs and methods of preparing these compounds