EP2547645 - PROCESSES AND INTERMEDIATES FOR PREPARING A MACROCYCLIC PROTEASE INHIBITOR OF HCV [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 10.05.2019 Database last updated on 02.11.2024 | |
Former | The patent has been granted Status updated on 01.06.2018 | ||
Former | Grant of patent is intended Status updated on 30.01.2018 | ||
Former | Examination is in progress Status updated on 11.11.2016 | Most recent event Tooltip | 01.07.2022 | Lapse of the patent in a contracting state New state(s): MK | published on 03.08.2022 [2022/31] | Applicant(s) | For all designated states Janssen Pharmaceuticals, Inc. 1125 Trenton-Harbourton Road Titusville, NJ 08560 / US | [2018/27] |
Former [2013/04] | For all designated states Janssen Pharmaceuticals, Inc. 1125 Trenton-Harbourton Road Titusville, NJ 08560 / US | Inventor(s) | 01 /
ORMEROD, Dominic, John Jan Van Cuyckstraat 24 2320 Hoogstraten / BE | 02 /
DEPRÉ, Dominique, Paul, Michel Rue René Ménada 81 1320 Hamme-Mille / BE | 03 /
HORVATH, Andras Dokter Paul Janssenlaan 16 2300 Turnhout / BE | [2013/04] | Representative(s) | Purewal, Savroop Janssen Pharmaceutica NV J&J Patent Law Department Turnhoutseweg 30 2340 Beerse / BE | [2013/04] | Application number, filing date | 11709692.5 | 16.03.2011 | [2018/27] | WO2011EP53957 | Priority number, date | EP20100156681 | 16.03.2010 Original published format: EP 10156681 | [2013/04] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | WO2011113859 | Date: | 22.09.2011 | Language: | EN | [2011/38] | Type: | A1 Application with search report | No.: | EP2547645 | Date: | 23.01.2013 | Language: | EN | The application published by WIPO in one of the EPO official languages on 22.09.2011 takes the place of the publication of the European patent application. | [2013/04] | Type: | B1 Patent specification | No.: | EP2547645 | Date: | 04.07.2018 | Language: | EN | [2018/27] | Search report(s) | International search report - published on: | EP | 22.09.2011 | Classification | IPC: | C07C67/03, C07C67/31, C07C255/57, C07D309/30, C07C69/757, C07C201/12, C07C205/57, C07C235/40, C07C317/44, C07C215/30, C07D417/04, C07D417/14, C07C231/12, C07D251/30, C07D251/28, C07D491/18, C07C51/02, C07C51/41, C07C215/20 | [2018/07] | CPC: |
C07D417/04 (EP,RU,US);
C07C67/03 (EP,KR,US);
C07C201/12 (EP,KR,RU,US);
C07C205/57 (EP,KR,RU,US);
C07C215/20 (US);
C07C215/30 (EP,RU,US);
C07C231/12 (EP,RU,US);
C07C235/40 (EP,RU,US);
C07C235/82 (US);
C07C255/57 (EP,KR,RU,US);
C07C317/44 (EP,US);
C07C51/02 (EP,US);
C07C51/412 (EP,KR,US);
C07C51/43 (EP,KR,US);
C07C61/06 (RU,US);
C07C67/31 (EP,KR,US);
C07C69/757 (EP,KR,US);
C07D251/28 (EP,RU,US);
C07D251/30 (EP,KR,RU,US);
C07D309/30 (EP,KR,RU,US);
C07D417/14 (EP,RU,US);
C07D491/18 (EP,RU,US);
C07D491/22 (EP,US);
C07B2200/07 (EP,US);
| C-Set: |
C07C201/12, C07C205/57 (EP,US);
C07C51/02, C07C62/24 (US,EP);
C07C51/412, C07C62/24 (EP,US);
C07C51/43, C07C62/24 (US,EP); |
Former IPC [2013/04] | C07C51/487, C07C61/06, C07C69/74, C07C235/40 | Designated contracting states | AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR [2013/04] | Extension states | BA | 16.10.2012 | ME | 16.10.2012 | Title | German: | PROCÉDÉS ET INTERMÉDIAIRES POUR PRÉPARER UN INHIBITEUR DE PROTÉASE MACROCYCLIQUE DU VIRUS DE L'HÉPATITE C | [2018/09] | English: | PROCESSES AND INTERMEDIATES FOR PREPARING A MACROCYCLIC PROTEASE INHIBITOR OF HCV | [2013/04] | French: | VERFAHREN UND ZWISCHENPRODUKTE ZUR HERSTELLUNG EINES MAKROZYKLISCHEN PROTEASEHEMMERS VON HCV | [2018/09] |
Former [2013/04] | VERFAHREN UND ZWISCHENPRODUKTE ZUR HERSTELLUNG EINES MAKROZYKLISCHEN PROTEASEHEMMERS VON HCV | ||
Former [2013/04] | PROCÉDÉS ET INTERMÉDIAIRES DE PRÉPARATION D'UN INHIBITEUR DE PROTÉASE MACROCYCLIQUE DE HCV | Entry into regional phase | 16.10.2012 | National basic fee paid | 16.10.2012 | Designation fee(s) paid | 16.10.2012 | Examination fee paid | Examination procedure | 16.10.2012 | Examination requested [2013/04] | 02.05.2013 | Amendment by applicant (claims and/or description) | 27.10.2014 | Despatch of a communication from the examining division (Time limit: M06) | 29.05.2015 | Despatch of communication that the application is deemed to be withdrawn, reason: reply to the communication from the examining division not received in time | 29.07.2015 | Reply to a communication from the examining division | 02.11.2016 | Despatch of a communication from the examining division (Time limit: M06) | 13.04.2017 | Reply to a communication from the examining division | 31.01.2018 | Communication of intention to grant the patent | 24.05.2018 | Fee for grant paid | 24.05.2018 | Fee for publishing/printing paid | 24.05.2018 | Receipt of the translation of the claim(s) | Divisional application(s) | EP17166514.4 / EP3239129 | The date of the Examining Division's first communication in respect of the earliest application for which a communication has been issued is 27.10.2014 | Opposition(s) | 05.04.2019 | No opposition filed within time limit [2019/24] | Request for further processing for: | The application is deemed to be withdrawn due to failure to reply to the examination report | 29.07.2015 | Request for further processing filed | 29.07.2015 | Full payment received (date of receipt of payment) Request granted | 06.08.2015 | Decision despatched | Fees paid | Renewal fee | 02.04.2013 | Renewal fee patent year 03 | 31.03.2014 | Renewal fee patent year 04 | 31.03.2015 | Renewal fee patent year 05 | 31.03.2016 | Renewal fee patent year 06 | 31.03.2017 | Renewal fee patent year 07 | 03.04.2018 | Renewal fee patent year 08 |
Opt-out from the exclusive Tooltip competence of the Unified Patent Court | See the Register of the Unified Patent Court for opt-out data | ||
Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court. | Lapses during opposition Tooltip | HU | 16.03.2011 | AL | 04.07.2018 | AT | 04.07.2018 | CY | 04.07.2018 | CZ | 04.07.2018 | DK | 04.07.2018 | EE | 04.07.2018 | ES | 04.07.2018 | FI | 04.07.2018 | HR | 04.07.2018 | IT | 04.07.2018 | LT | 04.07.2018 | LV | 04.07.2018 | MC | 04.07.2018 | MK | 04.07.2018 | NL | 04.07.2018 | PL | 04.07.2018 | RO | 04.07.2018 | RS | 04.07.2018 | SE | 04.07.2018 | SI | 04.07.2018 | SK | 04.07.2018 | SM | 04.07.2018 | TR | 04.07.2018 | BG | 04.10.2018 | NO | 04.10.2018 | GR | 05.10.2018 | IS | 04.11.2018 | PT | 05.11.2018 | GB | 16.03.2019 | IE | 16.03.2019 | LU | 16.03.2019 | MT | 16.03.2019 | BE | 31.03.2019 | CH | 31.03.2019 | FR | 31.03.2019 | LI | 31.03.2019 | [2022/31] |
Former [2021/32] | HU | 16.03.2011 | |
AL | 04.07.2018 | ||
AT | 04.07.2018 | ||
CY | 04.07.2018 | ||
CZ | 04.07.2018 | ||
DK | 04.07.2018 | ||
EE | 04.07.2018 | ||
ES | 04.07.2018 | ||
FI | 04.07.2018 | ||
HR | 04.07.2018 | ||
IT | 04.07.2018 | ||
LT | 04.07.2018 | ||
LV | 04.07.2018 | ||
MC | 04.07.2018 | ||
NL | 04.07.2018 | ||
PL | 04.07.2018 | ||
RO | 04.07.2018 | ||
RS | 04.07.2018 | ||
SE | 04.07.2018 | ||
SI | 04.07.2018 | ||
SK | 04.07.2018 | ||
SM | 04.07.2018 | ||
TR | 04.07.2018 | ||
BG | 04.10.2018 | ||
NO | 04.10.2018 | ||
GR | 05.10.2018 | ||
IS | 04.11.2018 | ||
PT | 05.11.2018 | ||
GB | 16.03.2019 | ||
IE | 16.03.2019 | ||
LU | 16.03.2019 | ||
MT | 16.03.2019 | ||
BE | 31.03.2019 | ||
CH | 31.03.2019 | ||
FR | 31.03.2019 | ||
LI | 31.03.2019 | ||
Former [2021/26] | AL | 04.07.2018 | |
AT | 04.07.2018 | ||
CY | 04.07.2018 | ||
CZ | 04.07.2018 | ||
DK | 04.07.2018 | ||
EE | 04.07.2018 | ||
ES | 04.07.2018 | ||
FI | 04.07.2018 | ||
HR | 04.07.2018 | ||
IT | 04.07.2018 | ||
LT | 04.07.2018 | ||
LV | 04.07.2018 | ||
MC | 04.07.2018 | ||
NL | 04.07.2018 | ||
PL | 04.07.2018 | ||
RO | 04.07.2018 | ||
RS | 04.07.2018 | ||
SE | 04.07.2018 | ||
SI | 04.07.2018 | ||
SK | 04.07.2018 | ||
SM | 04.07.2018 | ||
TR | 04.07.2018 | ||
BG | 04.10.2018 | ||
NO | 04.10.2018 | ||
GR | 05.10.2018 | ||
IS | 04.11.2018 | ||
PT | 05.11.2018 | ||
GB | 16.03.2019 | ||
IE | 16.03.2019 | ||
LU | 16.03.2019 | ||
MT | 16.03.2019 | ||
BE | 31.03.2019 | ||
CH | 31.03.2019 | ||
FR | 31.03.2019 | ||
LI | 31.03.2019 | ||
Former [2020/29] | AL | 04.07.2018 | |
AT | 04.07.2018 | ||
CZ | 04.07.2018 | ||
DK | 04.07.2018 | ||
EE | 04.07.2018 | ||
ES | 04.07.2018 | ||
FI | 04.07.2018 | ||
HR | 04.07.2018 | ||
IT | 04.07.2018 | ||
LT | 04.07.2018 | ||
LV | 04.07.2018 | ||
MC | 04.07.2018 | ||
NL | 04.07.2018 | ||
PL | 04.07.2018 | ||
RO | 04.07.2018 | ||
RS | 04.07.2018 | ||
SE | 04.07.2018 | ||
SI | 04.07.2018 | ||
SK | 04.07.2018 | ||
SM | 04.07.2018 | ||
TR | 04.07.2018 | ||
BG | 04.10.2018 | ||
NO | 04.10.2018 | ||
GR | 05.10.2018 | ||
IS | 04.11.2018 | ||
PT | 05.11.2018 | ||
GB | 16.03.2019 | ||
IE | 16.03.2019 | ||
LU | 16.03.2019 | ||
MT | 16.03.2019 | ||
BE | 31.03.2019 | ||
CH | 31.03.2019 | ||
FR | 31.03.2019 | ||
LI | 31.03.2019 | ||
Former [2020/16] | AL | 04.07.2018 | |
AT | 04.07.2018 | ||
CZ | 04.07.2018 | ||
DK | 04.07.2018 | ||
EE | 04.07.2018 | ||
ES | 04.07.2018 | ||
FI | 04.07.2018 | ||
HR | 04.07.2018 | ||
IT | 04.07.2018 | ||
LT | 04.07.2018 | ||
LV | 04.07.2018 | ||
MC | 04.07.2018 | ||
NL | 04.07.2018 | ||
PL | 04.07.2018 | ||
RO | 04.07.2018 | ||
RS | 04.07.2018 | ||
SE | 04.07.2018 | ||
SI | 04.07.2018 | ||
SK | 04.07.2018 | ||
SM | 04.07.2018 | ||
TR | 04.07.2018 | ||
BG | 04.10.2018 | ||
NO | 04.10.2018 | ||
GR | 05.10.2018 | ||
IS | 04.11.2018 | ||
GB | 16.03.2019 | ||
IE | 16.03.2019 | ||
LU | 16.03.2019 | ||
BE | 31.03.2019 | ||
CH | 31.03.2019 | ||
FR | 31.03.2019 | ||
LI | 31.03.2019 | ||
Former [2020/11] | AL | 04.07.2018 | |
AT | 04.07.2018 | ||
CZ | 04.07.2018 | ||
DK | 04.07.2018 | ||
EE | 04.07.2018 | ||
ES | 04.07.2018 | ||
FI | 04.07.2018 | ||
HR | 04.07.2018 | ||
IT | 04.07.2018 | ||
LT | 04.07.2018 | ||
LV | 04.07.2018 | ||
MC | 04.07.2018 | ||
NL | 04.07.2018 | ||
PL | 04.07.2018 | ||
RO | 04.07.2018 | ||
RS | 04.07.2018 | ||
SE | 04.07.2018 | ||
SI | 04.07.2018 | ||
SK | 04.07.2018 | ||
SM | 04.07.2018 | ||
BG | 04.10.2018 | ||
NO | 04.10.2018 | ||
GR | 05.10.2018 | ||
IS | 04.11.2018 | ||
GB | 16.03.2019 | ||
IE | 16.03.2019 | ||
LU | 16.03.2019 | ||
BE | 31.03.2019 | ||
CH | 31.03.2019 | ||
FR | 31.03.2019 | ||
LI | 31.03.2019 | ||
Former [2020/09] | AL | 04.07.2018 | |
AT | 04.07.2018 | ||
CZ | 04.07.2018 | ||
DK | 04.07.2018 | ||
EE | 04.07.2018 | ||
ES | 04.07.2018 | ||
FI | 04.07.2018 | ||
HR | 04.07.2018 | ||
IT | 04.07.2018 | ||
LT | 04.07.2018 | ||
LV | 04.07.2018 | ||
MC | 04.07.2018 | ||
NL | 04.07.2018 | ||
PL | 04.07.2018 | ||
RO | 04.07.2018 | ||
RS | 04.07.2018 | ||
SE | 04.07.2018 | ||
SI | 04.07.2018 | ||
SK | 04.07.2018 | ||
SM | 04.07.2018 | ||
BG | 04.10.2018 | ||
NO | 04.10.2018 | ||
GR | 05.10.2018 | ||
IS | 04.11.2018 | ||
IE | 16.03.2019 | ||
LU | 16.03.2019 | ||
Former [2020/01] | AL | 04.07.2018 | |
AT | 04.07.2018 | ||
CZ | 04.07.2018 | ||
DK | 04.07.2018 | ||
EE | 04.07.2018 | ||
ES | 04.07.2018 | ||
FI | 04.07.2018 | ||
HR | 04.07.2018 | ||
IT | 04.07.2018 | ||
LT | 04.07.2018 | ||
LV | 04.07.2018 | ||
MC | 04.07.2018 | ||
NL | 04.07.2018 | ||
PL | 04.07.2018 | ||
RO | 04.07.2018 | ||
RS | 04.07.2018 | ||
SE | 04.07.2018 | ||
SI | 04.07.2018 | ||
SK | 04.07.2018 | ||
SM | 04.07.2018 | ||
BG | 04.10.2018 | ||
NO | 04.10.2018 | ||
GR | 05.10.2018 | ||
IS | 04.11.2018 | ||
LU | 16.03.2019 | ||
Former [2019/46] | AL | 04.07.2018 | |
AT | 04.07.2018 | ||
CZ | 04.07.2018 | ||
DK | 04.07.2018 | ||
EE | 04.07.2018 | ||
ES | 04.07.2018 | ||
FI | 04.07.2018 | ||
HR | 04.07.2018 | ||
IT | 04.07.2018 | ||
LT | 04.07.2018 | ||
LV | 04.07.2018 | ||
MC | 04.07.2018 | ||
NL | 04.07.2018 | ||
PL | 04.07.2018 | ||
RO | 04.07.2018 | ||
RS | 04.07.2018 | ||
SE | 04.07.2018 | ||
SI | 04.07.2018 | ||
SK | 04.07.2018 | ||
SM | 04.07.2018 | ||
BG | 04.10.2018 | ||
NO | 04.10.2018 | ||
GR | 05.10.2018 | ||
IS | 04.11.2018 | ||
Former [2019/37] | AL | 04.07.2018 | |
AT | 04.07.2018 | ||
CZ | 04.07.2018 | ||
DK | 04.07.2018 | ||
EE | 04.07.2018 | ||
ES | 04.07.2018 | ||
FI | 04.07.2018 | ||
HR | 04.07.2018 | ||
IT | 04.07.2018 | ||
LT | 04.07.2018 | ||
LV | 04.07.2018 | ||
NL | 04.07.2018 | ||
PL | 04.07.2018 | ||
RO | 04.07.2018 | ||
RS | 04.07.2018 | ||
SE | 04.07.2018 | ||
SI | 04.07.2018 | ||
SK | 04.07.2018 | ||
SM | 04.07.2018 | ||
BG | 04.10.2018 | ||
NO | 04.10.2018 | ||
GR | 05.10.2018 | ||
IS | 04.11.2018 | ||
Former [2019/26] | AL | 04.07.2018 | |
AT | 04.07.2018 | ||
CZ | 04.07.2018 | ||
DK | 04.07.2018 | ||
EE | 04.07.2018 | ||
ES | 04.07.2018 | ||
FI | 04.07.2018 | ||
HR | 04.07.2018 | ||
IT | 04.07.2018 | ||
LT | 04.07.2018 | ||
LV | 04.07.2018 | ||
NL | 04.07.2018 | ||
PL | 04.07.2018 | ||
RO | 04.07.2018 | ||
RS | 04.07.2018 | ||
SE | 04.07.2018 | ||
SK | 04.07.2018 | ||
SM | 04.07.2018 | ||
BG | 04.10.2018 | ||
NO | 04.10.2018 | ||
GR | 05.10.2018 | ||
IS | 04.11.2018 | ||
Former [2019/24] | AL | 04.07.2018 | |
AT | 04.07.2018 | ||
CZ | 04.07.2018 | ||
EE | 04.07.2018 | ||
ES | 04.07.2018 | ||
FI | 04.07.2018 | ||
HR | 04.07.2018 | ||
IT | 04.07.2018 | ||
LT | 04.07.2018 | ||
LV | 04.07.2018 | ||
NL | 04.07.2018 | ||
PL | 04.07.2018 | ||
RO | 04.07.2018 | ||
RS | 04.07.2018 | ||
SE | 04.07.2018 | ||
SK | 04.07.2018 | ||
BG | 04.10.2018 | ||
NO | 04.10.2018 | ||
GR | 05.10.2018 | ||
IS | 04.11.2018 | ||
Former [2019/22] | AL | 04.07.2018 | |
AT | 04.07.2018 | ||
CZ | 04.07.2018 | ||
ES | 04.07.2018 | ||
FI | 04.07.2018 | ||
HR | 04.07.2018 | ||
IT | 04.07.2018 | ||
LT | 04.07.2018 | ||
LV | 04.07.2018 | ||
NL | 04.07.2018 | ||
PL | 04.07.2018 | ||
RO | 04.07.2018 | ||
RS | 04.07.2018 | ||
SE | 04.07.2018 | ||
BG | 04.10.2018 | ||
NO | 04.10.2018 | ||
GR | 05.10.2018 | ||
IS | 04.11.2018 | ||
Former [2019/21] | AL | 04.07.2018 | |
AT | 04.07.2018 | ||
CZ | 04.07.2018 | ||
ES | 04.07.2018 | ||
FI | 04.07.2018 | ||
HR | 04.07.2018 | ||
IT | 04.07.2018 | ||
LT | 04.07.2018 | ||
LV | 04.07.2018 | ||
NL | 04.07.2018 | ||
PL | 04.07.2018 | ||
RS | 04.07.2018 | ||
SE | 04.07.2018 | ||
BG | 04.10.2018 | ||
NO | 04.10.2018 | ||
GR | 05.10.2018 | ||
IS | 04.11.2018 | ||
Former [2019/12] | AL | 04.07.2018 | |
AT | 04.07.2018 | ||
CZ | 04.07.2018 | ||
ES | 04.07.2018 | ||
FI | 04.07.2018 | ||
HR | 04.07.2018 | ||
LT | 04.07.2018 | ||
LV | 04.07.2018 | ||
NL | 04.07.2018 | ||
PL | 04.07.2018 | ||
RS | 04.07.2018 | ||
SE | 04.07.2018 | ||
BG | 04.10.2018 | ||
NO | 04.10.2018 | ||
GR | 05.10.2018 | ||
IS | 04.11.2018 | ||
Former [2019/11] | AT | 04.07.2018 | |
CZ | 04.07.2018 | ||
FI | 04.07.2018 | ||
HR | 04.07.2018 | ||
LT | 04.07.2018 | ||
NL | 04.07.2018 | ||
PL | 04.07.2018 | ||
RS | 04.07.2018 | ||
SE | 04.07.2018 | ||
BG | 04.10.2018 | ||
NO | 04.10.2018 | ||
GR | 05.10.2018 | ||
IS | 04.11.2018 | ||
Former [2019/10] | AT | 04.07.2018 | |
CZ | 04.07.2018 | ||
FI | 04.07.2018 | ||
LT | 04.07.2018 | ||
NL | 04.07.2018 | ||
PL | 04.07.2018 | ||
RS | 04.07.2018 | ||
SE | 04.07.2018 | ||
BG | 04.10.2018 | ||
NO | 04.10.2018 | ||
GR | 05.10.2018 | ||
IS | 04.11.2018 | ||
Former [2019/08] | FI | 04.07.2018 | |
LT | 04.07.2018 | ||
NL | 04.07.2018 | ||
NO | 04.10.2018 | ||
IS | 04.11.2018 | ||
Former [2019/07] | LT | 04.07.2018 | |
NL | 04.07.2018 | ||
Former [2019/04] | NL | 04.07.2018 | Cited in | International search | [AD]WO2008092955 (TIBOTEC PHARM LTD [IE], et al) [AD] 1-18 * claims 1-32 *; | [A] - JOHANSSON P O ET AL, "Potent inhibitors of the hepatitis C virus NS3 protease: Use of a novel P2 cyclopentane-derived template", BIOORGANIC & MEDICINAL CHEMISTRY, PERGAMON, GB LNKD- DOI:10.1016/J.BMC.2006.04.008, vol. 14, no. 15, ISSN 0968-0896, (20060801), pages 5136 - 5151, (20060801), XP025133411 [A] 1-18 * Scheme 1 * DOI: http://dx.doi.org/10.1016/j.bmc.2006.04.008 | [A] - EZQUERRA J ET AL, "Conformationally Constrained ACPD Analogues. Synthesis and Resolution of 3-Aminobicyclo[3,3,0]Octane-1,3-Dicarboxylic Acids", TETRAHEDRON, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL LNKD- DOI:10.1016/0040-4020(95)00049-E, (19950313), vol. 51, no. 11, ISSN 0040-4020, pages 3271 - 3278, XP004104761 [A] 1-18 * Scheme 2; * DOI: http://dx.doi.org/10.1016/0040-4020(95)00049-E | [A] - H. Ahlbrecht et.al., Stereoselective Synthesis, Stuttgart, New York, Müller; Houben; Kropf; Büchel, (1995), vol. E 21 a, pages 81 - 101, XP002594193 [A] 1-18 * pages 81-83,91-94,99-101 * | by applicant | WO2005073195 | WO2005073216 | WO2007014926 | WO2008092955 | - ROSENQUIST ET AL., ACTA CHEMICA SCANDINAVICA, (1992), vol. 46, pages 1127 - 1129 | - HONDA ET AL., TETRAHEDRON LETTERS, (1981), vol. 22, no. 28, pages 2679 - 2682 | - VELUSAMY, S.; PUNNIYAMURTHY, T., EUR.J.ORG. CHEM, (2003), page 3913 |